#Maven dependency error in eclipse

[sruthypm]

Techmindz: Leading Java Courses in Ernakulam to Kickstart Your IT Career

In today’s rapidly evolving tech landscape, Java continues to be one of the most sought-after programming languages for software development. Whether you are a fresh graduate or a professional looking to enhance your skills, enrolling in a Java course in Ernakulam can open the doors to numerous career opportunities in the world of IT.

Techmindz, located in the heart of Infopark, Kochi, offers industry-centric Java courses designed to help you master the fundamentals and advanced concepts of Java programming. Let’s take a closer look at why Techmindz is the perfect choice for your Java learning journey.

Why Choose Techmindz for Java Courses in Ernakulam?

Techmindz has established itself as a premier institution for tech training in Kerala, known for its comprehensive and hands-on approach to learning. The institution offers a range of Java courses that cater to both beginners and experienced developers. Here's why you should choose Techmindz for your Java learning:

Industry-Aligned Curriculum Techmindz’s Java course is designed with input from industry experts, ensuring that the content is up-to-date and aligned with the needs of the modern job market. You’ll learn not just basic Java syntax, but also how to build real-world applications using Java frameworks like Spring, Hibernate, and more.

Experienced Trainers The trainers at Techmindz are seasoned professionals with years of experience in Java development. They bring a wealth of knowledge, real-world insights, and practical tips, making the learning experience highly valuable.

Hands-On Learning At Techmindz, theoretical knowledge is paired with practical application. Students work on live projects, coding challenges, and problem-solving sessions, ensuring that they gain the skills needed to excel in real-world Java development.

Placement Assistance Techmindz provides excellent placement support, helping students connect with top companies in Ernakulam and beyond. With a network of hiring partners, Techmindz ensures that graduates are job-ready and well-prepared to face interviews.

Flexible Batch Options Understanding that students have different schedules, Techmindz offers both weekday and weekend batches for its Java courses in Ernakulam. Whether you are a student or a working professional, you can choose the batch that fits your schedule.

What Will You Learn in Techmindz’s Java Courses?

Techmindz’s Java course in Ernakulam covers everything from basic to advanced topics. Here’s an overview of the key concepts you’ll learn:

Core Java Concepts: Learn the fundamentals of Java programming including variables, loops, conditionals, and functions.

Object-Oriented Programming (OOP): Understand the four pillars of OOP – encapsulation, inheritance, polymorphism, and abstraction – to write modular and reusable code.

Data Structures and Algorithms: Gain proficiency in key data structures like arrays, linked lists, stacks, queues, and trees, and understand the algorithms used to solve common programming problems.

Java Collections Framework: Dive deep into collections like lists, sets, maps, and queues, which are essential for building efficient Java applications.

Exception Handling: Learn how to handle errors and exceptions effectively to make your Java applications robust.

Java Development Tools: Get hands-on experience with Java IDEs like Eclipse and IntelliJ IDEA, as well as build automation tools like Maven and Gradle.

Database Integration: Learn how to work with databases using Java Database Connectivity (JDBC) to create data-driven applications.

Frameworks and Technologies: Explore popular Java frameworks like Spring and Hibernate for building enterprise-level applications.

Course Duration and Delivery Modes

Techmindz’s Java course is designed to accommodate both full-time and part-time learners. The duration of the course typically ranges from 2 to 3 months, depending on your chosen batch and learning pace. The delivery modes include:

Classroom Sessions: Engage in interactive sessions with industry experts at Techmindz's modern campus in Infopark, Ernakulam.

Online Classes: For those who are unable to attend in person, Techmindz offers live online classes with the same quality of instruction.

Self-Paced Learning: You’ll also have access to recorded sessions, allowing you to learn at your own pace.

Who Should Enroll in Java Courses at Techmindz?

Techmindz’s Java courses in Ernakulam are suitable for:

Beginners: If you are new to programming or coming from a non-technical background, Techmindz’s beginner-friendly curriculum will guide you step-by-step through the concepts of Java.

Experienced Programmers: If you already have basic programming knowledge and want to deepen your Java skills, Techmindz’s advanced modules will prepare you for complex real-world scenarios.

Professionals Seeking Career Change: If you are a working professional looking to shift into Java development, this course provides the necessary skills and knowledge to transition smoothly.

Start Your Journey Today!

The demand for skilled Java developers is at an all-time high, and enrolling in Techmindz’s Java course in Ernakulam can provide you with the expertise you need to succeed in this competitive field. With expert trainers, a practical curriculum, and excellent placement support, Techmindz is the ideal place to take your Java skills to the next level.

To get started, visit Techmindz and book your spot in the next batch. You can also walk into our Ernakulam or Infopark campus for personalized counseling. Don’t miss out on the opportunity to enhance your skills and build a successful career as a Java developer!

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[deltasaas]

Unlocking Creativity and Efficiency with Development Tools Software

Development tools software is the backbone of modern software creation, empowering developers to design, build, test, and deploy applications with precision and speed. From writing code to debugging errors and managing projects, these tools streamline every stage of the development process, making them essential for programmers, businesses, and tech innovators. But what exactly is development tools software, how does it work, and why is it so vital in today’s tech-driven world? In this guide, we’ll explore its fundamentals, types, benefits, and tips for choosing the right tools, followed by an FAQ to address common questions.

What Is Development Tools Software?

Development tools software refers to a suite of applications, frameworks, and utilities designed to assist developers in creating software, websites, or apps. These tools cover a wide range of tasks: writing and editing code (e.g., Visual Studio Code), debugging (e.g., Chrome DevTools), version control (e.g., Git), and automating builds (e.g., Jenkins). They can be standalone programs or integrated into larger platforms called Integrated Development Environments (IDEs), which combine multiple tools into a single interface.

At its essence, development tools software enhances productivity by automating repetitive tasks, catching errors early, and providing a structured environment for coding. Whether you’re building a mobile game, a web app, or an enterprise system, these tools are the craftsman’s kit for turning ideas into functional software.

How Does Development Tools Software Work?

Development tools software operates by providing specialized functionalities tailored to the software development lifecycle:

Coding: Editors like Sublime Text or IDEs like IntelliJ IDEA offer syntax highlighting, auto-completion, and code suggestions.

Debugging: Tools like GDB or built-in IDE debuggers identify and fix bugs by stepping through code execution.

Testing: Frameworks like JUnit or Selenium automate testing to ensure code reliability.

Collaboration: Version control systems like Git (via GitHub or GitLab) track changes and enable team workflows.

Deployment: Build tools like Maven or CI/CD platforms like CircleCI compile and release software to production.

For example, a developer might use Visual Studio Code to write Python, debug it with PyCharm’s tools, test it with pytest, and push it to GitHub—all powered by different development tools software working in harmony.

Types of Development Tools Software

The category is broad, with tools specializing in various development stages:

Code Editors: Lightweight tools like VS Code or Atom for writing and editing code.

Integrated Development Environments (IDEs): All-in-one platforms like Eclipse or Xcode, combining editing, debugging, and more.

Version Control Systems: Git, Subversion (SVN), or Mercurial for tracking code changes.

Build Tools: Maven, Gradle, or npm for automating compilation and dependency management.

Testing Tools: Jest, Mocha, or Postman for validating functionality and APIs.

CI/CD Tools: Jenkins, Travis CI, or GitHub Actions for continuous integration and deployment.

Each type addresses a specific need, often used together for a seamless workflow.

Applications of Development Tools Software

Development tools software powers a vast array of projects:

Web Development: Tools like VS Code and Webpack build responsive sites.

Mobile Apps: Android Studio or Flutter create apps for iOS and Android.

Game Development: Unity and Unreal Engine craft immersive games.

Enterprise Software: IntelliJ IDEA and Jenkins support complex business systems.

Open-Source Projects: Git and GitHub enable global collaboration.

AI/ML: Jupyter Notebook and TensorFlow aid machine learning development.

These tools are the foundation for innovation across industries, from startups to tech giants.

Benefits of Development Tools Software

Productivity: Automates repetitive tasks, letting developers focus on logic and creativity.

Accuracy: Debugging and testing tools catch errors before they reach users.

Collaboration: Version control fosters teamwork on shared codebases.

Scalability: Build and CI/CD tools handle projects from small scripts to massive systems.

Learning Curve: Modern tools often include tutorials and community support, easing onboarding.

Popular Development Tools Software Options

Visual Studio Code: A free, extensible code editor with broad language support.

IntelliJ IDEA: A powerful IDE for Java and beyond, with smart code assistance.

Git: The leading version control system, paired with platforms like GitHub.

Jenkins: An open-source CI/CD tool for automating builds and deployments.

Postman: A go-to for API testing and development.

Unity: A game development engine with robust tools for 2D and 3D projects.

These range from free, community-driven options to premium, enterprise-grade solutions.

How to Choose the Right Development Tools Software

Selecting the best tools depends on your needs:

Project Type: Web devs might pick VS Code; game devs might choose Unity.

Language: Ensure compatibility—e.g., PyCharm for Python, Xcode for Swift.

Skill Level: Beginners favor simple editors; pros might use full IDEs.

Budget: Free tools like Git suit tight budgets; paid IDEs like IntelliJ offer advanced features.

Community: Tools with active forums (e.g., VS Code) provide better support.

Experimenting with free versions or open-source options can guide your decision.

The Future of Development Tools Software

The landscape is evolving with trends like:

AI Assistance: Tools like GitHub Copilot suggest code in real time.

Cloud Integration: IDEs like Gitpod run entirely in the browser.

Low-Code Platforms: Simplifying development for non-coders.

Collaboration: Real-time coding tools like Replit enhance teamwork.

As software grows more complex, development tools will become smarter and more accessible.

Conclusion

Development tools software is the engine driving software creation, offering developers the power to build efficiently, collaboratively, and innovatively. Whether you’re a hobbyist coding a side project or a team launching a global app, these tools are your allies in turning vision into reality. By understanding their types and benefits, you can pick the perfect toolkit to elevate your development journey.

FAQ: Development Tools Software

What is development tools software? A: It’s software that helps developers write, test, debug, and deploy code, including editors, IDEs, and version control systems.

How does it differ from regular software? A: Regular software is for end-users; development tools software is for creating that software.

What are the main types of development tools software? A: Code editors (VS Code), IDEs (IntelliJ), version control (Git), build tools (Maven), testing tools (Jest), and CI/CD (Jenkins).

Who uses development tools software? A: Programmers, web developers, app creators, game designers, and tech teams rely on it.

Do I need coding skills to use development tools software? A: Basic tools like VS Code need minimal coding knowledge, but advanced ones like Jenkins require expertise.

Is development tools software free? A: Many are—like Git and VS Code—though premium tools (e.g., IntelliJ Ultimate, $499/year) offer extra features.

Can I use development tools software offline? A: Yes, editors and IDEs often work offline, but cloud-based or collaboration tools need internet.

What’s the best development tools software for beginners? A: VS Code is lightweight and beginner-friendly, with plenty of tutorials and extensions.

How do development tools improve productivity? A: They automate tasks, catch errors early, and streamline workflows, saving time and effort.

What’s the future of development tools software? A: Expect more AI-driven coding aids, cloud-based IDEs, and tools for non-coders as the field evolves.

[learning-code-ficusoft]

How to Build REST APIs with Java and Spring Boot

How to Build REST APIs with Java and Spring Boot

Spring Boot is one of the most popular frameworks for building RESTful APIs in Java. It simplifies the development process by providing pre-configured settings, embedded servers, and minimal boilerplate code. Below is a structured guide to help you build REST APIs using Java and Spring Boot.

1. Set Up Your Spring Boot Project

You can set up a Spring Boot project using Spring Initializr:

Select Spring Boot Version (latest stable version)

Choose Project: Maven or Gradle

Select Language: Java

Add Dependencies:

Spring Web (for REST APIs)

Spring Boot DevTools (for development convenience)

Lombok (for reducing boilerplate code)

Spring Data JPA (if using a database)

H2/MySQL/PostgreSQL (database choice)

Download the project, extract it, and open it in your preferred IDE (IntelliJ IDEA, Eclipse, or VS Code).

2. Create the Main Application Class

The entry point of a Spring Boot application is the @SpringBootApplication-annotated class.javapackage com.example.restapi;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication public class RestApiApplication { public static void main(String[] args) { SpringApplication.run(RestApiApplication.class, args); } }

3. Create a Model Class

The model represents the data structure.java package com.example.restapi.model;import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor;@Data @AllArgsConstructor @NoArgsConstructor public class Employee { private Long id; private String name; private String department; }

4. Create a REST Controller

Spring Boot uses the @RestController annotation to create API endpoints.package com.example.restapi.controller;import com.example.restapi.model.Employee; import org.springframework.web.bind.annotation.*;import java.util.ArrayList; import java.util.List;@RestController @RequestMapping("/employees") public class EmployeeController { private List<Employee> employees = new ArrayList<>(); @GetMapping public List<Employee> getAllEmployees() { return employees; } @PostMapping public Employee addEmployee(@RequestBody Employee employee) { employees.add(employee); return employee; } @GetMapping("/{id}") public Employee getEmployeeById(@PathVariable Long id) { return employees.stream() .filter(emp -> emp.getId().equals(id)) .findFirst() .orElse(null); } @DeleteMapping("/{id}") public String deleteEmployee(@PathVariable Long id) { employees.removeIf(emp -> emp.getId().equals(id)); return "Employee removed."; } }

5. Run and Test the API

Start the application by running the RestApiApplication.java class. You can test the API using Postman or cURL.

GET all employees: GET http://localhost:8080/employees

POST a new employee: POST http://localhost:8080/employees

Request Body (JSON):

json

{ "id": 1, "name": "John Doe", "department": "IT" }

GET employee by ID: GET http://localhost:8080/employees/1

DELETE an employee: DELETE http://localhost:8080/employees/1

6. Enhancements

To make the API more robust:

Use a database with JPA and Hibernate

Implement error handling using @ExceptionHandler

Add validation with @Valid

Secure the API with Spring Security and JWT

Document the API with Swagger

WEBSITE: https://www.ficusoft.in/core-java-training-in-chennai/

[mercyjuliet1512]

Becoming a Selenium Expert: A Roadmap to Success in Test Automation

As businesses increasingly rely on robust web applications, the demand for skilled test automation engineers is on the rise. Selenium, a popular open-source tool, is a key player in this space, enabling comprehensive testing of web applications.

Embracing Selenium's capabilities becomes even more accessible and impactful with Selenium Training in Pune.

This guide will take you through a structured approach to mastering Selenium, from foundational concepts to advanced techniques, ensuring you're well-equipped to excel in the field of test automation.

1. Foundation: Understanding Software Testing Principles

Before diving into Selenium, it's essential to understand the basics of software testing. Key areas to focus on include:

Manual vs. Automated Testing: Recognize the benefits and limitations of both approaches.

Testing Types: Differentiate between functional and non-functional testing, and understand their relevance in various contexts.

2. Programming Language Proficiency

To effectively use Selenium, you need to be comfortable with at least one programming language. The most commonly used languages are:

Java: Known for its widespread use and strong community support.

Python: Favored for its readability and simplicity, making it accessible for beginners.

C#: Common in enterprise environments, particularly within the Microsoft ecosystem.

Begin with the basics, including syntax, data structures, and control flow, then move on to more complex topics like object-oriented programming.

3. Web Technologies Knowledge

A solid understanding of web technologies is crucial for Selenium automation:

HTML: The building block of web pages.

CSS: For styling and layout of web elements.

JavaScript: Essential for interacting with dynamic content and client-side scripting.

4. Setting Up Your Selenium Environment

Establishing your development environment is a critical step:

Selenium WebDriver Installation: The core tool for browser automation.

IDE Selection: Choose a suitable Integrated Development Environment (IDE) like Eclipse, IntelliJ IDEA, or PyCharm.

Browser Drivers: Install the necessary drivers like ChromeDriver and GeckoDriver to interface with web browsers.

To unlock the full potential of Selenium and master the art of web automation, consider enrolling in the Top Selenium Online Training.

5. Core Selenium Concepts

Start exploring Selenium's core functionalities:

WebDriver Basics: Learn how Selenium interacts with browsers.

Locating Elements: Use techniques such as ID, class, XPath, and CSS selectors to identify elements on a web page.

Basic Actions: Perform operations like clicking buttons, filling forms, and navigating web pages.

6. Advanced Selenium Techniques

Once you're comfortable with the basics, delve into more advanced topics:

Handling Complex Web Elements: Manage frames, alerts, and dynamic elements.

Synchronization Techniques: Use implicit and explicit waits to ensure your tests run smoothly.

Page Object Model (POM): Implement this design pattern for creating reusable and maintainable test scripts.

Data-Driven Testing: Integrate external data sources to drive your tests, enhancing flexibility and coverage.

7. Practice and Skill Development

Practice is vital to becoming proficient in Selenium:

Framework Development: Learn to build and use frameworks like data-driven, keyword-driven, and hybrid frameworks. Explore Behavior-Driven Development (BDD) with Cucumber.

Error Handling and Logging: Develop strategies to manage exceptions and maintain detailed logs for debugging.

8. Integrating Additional Tools

Enhance your Selenium setup with additional tools:

Build Automation: Use Maven or Gradle to manage dependencies and automate build processes.

Testing Frameworks: Implement TestNG or JUnit for test management and reporting.

Continuous Integration (CI): Integrate with CI tools like Jenkins to streamline your testing workflow.

9. Cross-Browser Testing

Ensure your application works across different environments:

Selenium Grid: Set up to run tests concurrently on multiple browsers and systems.

Cloud-Based Testing: Utilize platforms like BrowserStack and Sauce Labs for testing across a wide range of devices and browsers.

10. Engage with the Selenium Community

Stay updated and gain insights by engaging with the Selenium community through forums, blogs, and discussion groups.

11. Build Your Portfolio and Get Certified

Create a portfolio showcasing your Selenium projects and consider obtaining certifications to validate your skills and enhance your career prospects.

12. Real-World Application

Apply your skills in practical settings through internships, freelance projects, or contributing to open-source initiatives. Real-world experience is invaluable for solidifying your knowledge and enhancing your resume.

Conclusion

Mastering Selenium is a journey that involves continuous learning and practice. By following this comprehensive roadmap, you'll build a strong foundation in test automation, enabling you to tackle complex challenges and excel in the field. Stay curious, keep practicing, and engage with the community to keep your skills sharp and relevant.

[akhil987]

java script blog

Mastering Java: A Guide to Understanding the Language

Java, the versatile and powerful programming language, has been a cornerstone of software development for decades. Whether you're a seasoned developer or just beginning your journey into programming, understanding Java is essential. Let's delve into what makes Java so significant and why it continues to be a favorite among developers worldwide.

Why Java?

Java's popularity stems from its platform independence, object-oriented structure, and robustness. Here are some key reasons why Java remains relevant:

Platform Independence: Java programs can run on any device that supports Java  (JVM), making it highly portable.

Object-Oriented: Java's object-oriented programming (OOP) approach allows developers to create modular programs and reusable code.

Rich API: Java provides a vast library of classes and methods that simplify development tasks, from networking to GUI programming.

Strong Community Support: Java boasts a large and active community, offering ample resources, frameworks, and updates.

Security: Java's design includes built-in security features, crucial for enterprise applications.

Key Concepts in Java

To grasp Java effectively, you should familiarize yourself with its foundational concepts:

Syntax: Java syntax is similar to C++, making it readable and easy to learn for those familiar with C-style languages.

Object and Classes: Everything in Java is an object, and classes are blueprints for these objects.

Inheritance and Polymorphism: Java supports inheritance, allowing one class to inherit attributes and methods from another. Polymorphism enables flexibility in method overriding.

Interfaces: Interfaces define a contract for classes to implement, promoting code flexibility and multiple inheritances.

Exception Handling: Java's robust exception handling mechanism helps manage errors gracefully, enhancing reliability.

Tools and Frameworks

Java's ecosystem offers numerous tools and frameworks to streamline development:

Integrated Development Environments (IDEs): IntelliJ IDEA, Eclipse, and NetBeans provide powerful tools for coding, debugging, and refactoring.

Build Tools: Apache Maven and Gradle automate the build process and manage dependencies.

Frameworks: Spring Framework simplifies enterprise application development, while Hibernate offers robust ORM (Object-Relational Mapping) capabilities.

Testing: JUnit is a popular framework for unit testing, ensuring code reliability.

Java in Practice

Java's versatility is evident across various domains:

Enterprise Applications: Java EE (Enterprise Edition) powers large-scale applications with its robustness and scalability.

Android Development: Android uses Java as its primary language for app development, leveraging its stability and performance.

Web Development: Java frameworks like Spring MVC facilitate backend development, while JavaServer Pages (JSP) enable dynamic web page generation.

Big Data and IoT: Java frameworks such as Apache Hadoop and Apache Kafka handle large-scale data processing, while Java's compatibility with embedded systems supports IoT applications.

The Future of Java

Java continues to evolve with each release, enhancing performance, security, and language features. Recent updates focus on modularity (Java 9), enhanced garbage collection (Java 11), and records (Java 14), ensuring Java remains relevant in modern software development.

Conclusion

Mastering Java opens doors to a world of possibilities in software development. Its robustness, platform independence, and vast ecosystem make it a preferred choice for building scalable applications across diverse domains. Whether you're developing enterprise solutions, mobile apps, or exploring emerging technologies like IoT and Big Data, Java's versatility ensures you're equipped for the challenge. Embrace Java, dive into its rich ecosystem, and unleash your potential as a developer in today's tech-driven world.

[javaproglanguage]

Java's key topics and concepts

Java Full Course,

1. Java Fundamentals: Start with the basics, including variables, data types, operators, and control flow. Understand how to write, compile, and run Java programs.

2. Object-Oriented Programming (OOP): Java is an object-oriented language, so grasp core OOP concepts like classes, objects, inheritance, polymorphism, and encapsulation.

3. Exception Handling: Learn how to handle exceptions using try-catch blocks to write robust and error-tolerant code.

4. Collections Framework: Explore Java's extensive collections library, including ArrayList, HashMap, HashSet, and others, for efficient data storage and manipulation.

5. Multithreading: Java provides built-in support for multithreading, enabling concurrent execution. Understand threads, synchronization, and thread safety for developing responsive applications.

6. File I/O: Learn how to read from and write to files using Java's File I/O API.

7. Java Virtual Machine (JVM): Understand how Java code is executed by the JVM, including memory management, bytecode execution, and garbage collection.

8. Java GUI Programming: Explore JavaFX and Swing for creating graphical user interfaces (GUIs) in desktop applications.

9. Web Development: Delve into Java Servlets and JavaServer Pages (JSP) for building dynamic web applications.

10. Frameworks: Familiarize yourself with popular Java frameworks like Spring (for enterprise applications) and Hibernate (for database access).

11. Build Tools: Learn to use build automation tools like Maven and Gradle to manage project dependencies and build processes efficiently.

12. Unit Testing: Practice writing unit tests using JUnit or TestNG to ensure code reliability and quality.

13. Java 8+ Features: Explore features introduced in Java 8, such as lambdas, streams, and the java.time package, for modernizing Java development.

14. Android Development: If interested in mobile app development, Java is a primary language for Android development. Learn to create Android apps.

15. Security: Understand Java security principles, secure coding practices, and how to handle vulnerabilities to write secure applications.

16. Best Practices: Follow coding best practices, design patterns, and performance optimization techniques to write clean, efficient, and maintainable code.

17. IDEs and Tools: Familiarize yourself with Java IDEs like Eclipse, IntelliJ IDEA, or NetBeans for efficient development.

18. Community and Resources: Join the Java developer community, participate in forums, and utilize online resources and documentation for continuous learning and problem-solving.

By mastering these Java topics, you'll be well-equipped to develop a wide range of applications, from desktop software to web and mobile applications, and contribute effectively to the Java development community.

[codeonedigest]

Maven Dependency Problem Solved Fixing the Maven Dependency Download Problem

Hi, a new #video on #solving the #maven #dependency #download #problem is published on #codeonedigest #youtube channel. Fixing the maven dependency problem. #Mavenunabletofindvalidcertificationpathtorequestedtarget #Unabletogetresourcefromrepositorycentr

Sometime maven is unable to download dependency due to certificate issue. Maven throws following errors due to missing trusted certificate in Java keystore. “Maven: unable to find valid certification path to requested target” “Unable to get resource from repository central” “Error transferring file sun.security.validator.ValidatorException” “PKIX path building…

[nicelaxcz]

Latest java development kit for mac

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vmargs : Extra VM arguments used to launch the Java Language Server. lombokSupport.enabled: Whether to enable lombok support. Absolute path to JDK home folder used to launch the Java Language Server. Java: Go to Super Implementation: goes to the super implementation for the current selected symbol in editor.

#Latest java development kit for mac code#

Java: Show Build Job Status: shows the Java Language Server job status in Visual Studio Code terminal.Java: List All Java Source Paths: lists all the Java source paths recognized by the Java Language Server workspace.This command is only available in the file explorer context menu and only works for unmanaged folders. Java: Remove Folder from Java Source Path: removes the selected folder from its project source path.Java: Add Folder to Java Source Path: adds the selected folder to its project source path.This command is only available in the editor context menu. Java: Attach Source: attaches a jar/zip source to the currently opened binary class file.Java: Clean Java Language Server Workspace: cleans the Java language server workspace.Creates a new settings file if none exists. Java: Open Java Formatter Settings: opens the Eclipse formatter settings.

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Java: Rebuild Projects: manually triggers a full build of the selected projects.

Java: Force Java Compilation ( Shift+Alt+B): manually triggers compilation of the workspace.

Java: Open All Log Files: opens both the Java Language Server log file and the Java extension log file.

Java: Open Java Extension Log File: opens the Java extension log file, useful for troubleshooting problems.

Java: Open Java Language Server Log File: opens the Java Language Server log file, useful for troubleshooting problems.

Java: Import Java Projects into Workspace: detects and imports all the Java projects into the Java Language Server workspace.

dependency changes or Java compilation level), according to the project build descriptor.

Java: Reload Projects ( Shift+Alt+U): It forces project configuration / classpath updates (eg.

This command is only available when the Java Language Server is in LightWeight mode.

Switch to Standard Mode: switches the Java Language Server to Standard mode.

The default runtime will be used when you open standalone Java files. If you need to compile your projects against a different JDK version, it's recommended you configure the property in your user settings, eg: If not specified, it is searched in the following order until a JDK meets current minimum requirement. The path to the Java Development Kit can be specified by the. setting in VS Code settings (workspace/user settings). And by default, will also be used to compile your projects. The tooling JDK will be used to launch the Language Server for Java. The following part is only kept for the universal version without embedded JRE. Users are only responsible for configuring Project JDKs to compile your Java projects. The embedded JRE is used to launch the Language Server for Java. Now that Java extension will publish platform specific versions, it will embed a JRE for supported platforms such as win32-圆4, linux-圆4, linux-arm64, darwin-圆4, darwin-arm64. You might also find useful information in the project Wiki. See the changelog for the latest release.

#Latest java development kit for mac install#

To launch and debug your Java programs, it's recommended you install Java Debug Extension for Visual Studio Code. Annotation processing support (automatic for Maven projects).Code formatting (on-type/selection/file).when pasting code into a java file with Ctrl+Shift+v ( Cmd+Shift+v on Mac).As-you-type reporting of parsing and compilation errors.

#Latest java development kit for mac android#

Gradle project support (with experimental Android project import support).Recognizes projects with Maven or Gradle build files in the directory hierarchy.Extension is activated when you first access a Java file.Download and install a Java Development Kit for your project (Java 1.5 or above is supported).If you do not have a Java Development Kit correctly set.Make sure that the class name and file name are the same.Language support for Java ™ for Visual Studio CodeĮclipse ™ JDT Language Server, which utilizesĮclipse ™ JDT, M2Eclipse and Buildship. Now write the first Java program as shown below, save the program as HelloWorld.java and exit the editor. In this step, we will write, compile, and execute our first program in Java using the standard Hello World example.

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You can follow How To Switch Java Version On Mac. It might be required to switch the active Java in case multiple JDKs are installed on the same Mac machine. This is all about installing Oracle JDK 17 on Mac systems including macOS Sierra, High Sierra, Mojave, Catalina, and Big Sur.

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[craftfox71]

Spring Boot Start Tomcat

Unable to start embedded tomcat spring-boot 2

Spring Boot Doesn't Start Tomcat

Spring Boot Don't Start Tomcat

Spring Boot Not Start Tomcat

Spring boot: Unable to start embedded Tomcat servlet container , Try to change the port number in application.yaml (or application.properties ) to something else. In my condition when I got an exception ' Unable to start embedded Tomcat servlet container', I opened the debug mode of spring boot by adding debug=true in the application.properties,

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SpringBoot - Unable to Start embedded TomCat, Probably you can avoid this by changing your project sdk. In my project I initially used java-11-openjdk-amd64 as my JDK and had the same issue. Unable to start spring boot 2 embedded tomcat with trust store #21014. ajitdas91 opened this issue Apr 19, 2020 · 2 comments Labels. for: stackoverflow. Comments.

Your system need to have the following minimum requirements to create a Spring Boot application −. Java 7; Maven 3.2; Gradle 2.5; Spring Boot CLI. The Spring Boot CLI is a command line tool and it allows us to run the Groovy scripts. This is the easiest way to create a Spring Boot application by using the Spring Boot Command Line Interface. In this tutorial, we learned how to configure and use a Tomcat connection pool in Spring Boot. In addition, we developed a basic command line application to show how easy is to work with Spring Boot, a Tomcat connection pool, and the H2 database. As usual, all the code samples shown in this tutorial are available over on GitHub.

Unable to start embedded Tomcat · Issue #10 · spring-guides/gs , Stack trace of thread: java.base@10.0.2/jdk.internal.misc. WebServerException​: Unable to start embedded Tomcat 2018-10-22 09:55:16.880 INFO 8552 --- ( main) RELEASE) at org.springframework.boot.web.embedded.tomcat. @philwebb Thanks!. Here is the background: I have spring boot 2.0 + jsp. Therefore, I need extend from SpringBootServletInitializer. Last weekend, I noticed its package has been changed from import org.springframework.boot.web.support.SpringBootServletInitializer to import org.springframework.boot.web.servlet.support.SpringBootServletInitializer, which gave me the impression there might be

Unable to start embedded tomcat gradle

Unable to start embedded tomcat Spring boot, I'm working on Spring Boot Gradle application. So If you are using embedded tomcat you dont need the Tomcat dependency and 9001 for management, but when I tried to run it on Tomcat, it failed with the same exception you posted. Application run failed org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server my build.Gradle dependencies config as follows.

Spring 5, Embedded Tomcat 8, and Gradle, As such, when starting a new Java project, Spring is an option that must be considered. Spring vs. Spring Boot. In the past, Spring was known for Unable to start embedded container Spring Boot Application org.apache.catalina.LifecycleException: A child container failed during start 0 Not able run Spring boot application as runnable jar from command prompt

Unable to start embedded Tomcat · Issue #10 · spring-guides/gs , I simply cloned the repo and ran 'mvn spring-boot:run' on the 'eureka-service'. > (ERROR) Failed to execute goal So with the Angel.SR4 (or SR6) for cloud and running a gradle dependencies you will notice that spring-boot 1.2.x is pulled in. As described in the migration guide you have to change your build.gradle :

Caused by: org.springframework.boot.web.server.webserverexception: unable to start embedded tomcat

Spring boot: Unable to start embedded Tomcat servlet container , springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat. I have gone through all of the stackoverflow and articles related to unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat. I have gone through all of the stackoverflow and articles related to Unable to start embedded tomcat.

Unable to start embedded Tomcat org.springframework.context , jar confliction between 'starter-web' and embedded tomcat ,use the following instead. <groupId>org.springframework.boot< > (ERROR) Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.0.5.RELEASE:run (default-cli) on project eureka-service: An exception occurred while running. null: InvocationTargetException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded

SpringBoot - Unable to Start embedded TomCat, Thread.run (Thread.java:844) Caused by: org.springframework.boot.web.server.​WebServerException: Unable to start embedded Tomcat at @philwebb Thanks!. Here is the background: I have spring boot 2.0 + jsp. Therefore, I need extend from SpringBootServletInitializer. Last weekend, I noticed its package has been changed from import org.springframework.boot.web.support.SpringBootServletInitializer to import org.springframework.boot.web.servlet.support.SpringBootServletInitializer, which gave me the impression there might be

Unable to start embedded tomcat eureka

unable to start embedded Tomcat when running Eureka Server , unable to start embedded Tomcat when running Eureka Server. For now I just want to run the server on localhost and later I want to add a sample Microservice that registers to it. The Problem is that I get an error when trying to start Eureka Server. I develop in Eclipse with Spring and Maven in an ubuntu vm. Stack Overflow Public Unable to start embedded Tomcat | Spring Boot Eureka Server WebServerException: Unable to start embedded Tomcat at org.springframework

Can't start embedded Tomcat Server when running an Eureka , Can't start embedded Tomcat Server when running an Eureka Then added @​EnableEurekaServer. I'm unable to reproduce this error. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. unable to start embedded Tomcat when running Eureka Chase chargeback phone number.

Unable to start embedded Tomcat · Issue #10 · spring-guides/gs , Working on a song book pdf. I simply cloned the repo and ran 'mvn spring-boot:run' on the 'eureka-service'. > (ERROR) Failed to execute goal > (ERROR) Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.0.5.RELEASE:run (default-cli) on project eureka-service: An exception occurred while running. null: InvocationTargetException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded

Spring boot tomcat admin console

Can I enable the tomcat manager app for Spring Boot's embedded , Does the embedded tomcat 7 used by Spring Boot contain a tomcat manager app. No, it doesn't and I'm not really sure that it makes sense to Does the embedded tomcat 7 used by Spring Boot contain a tomcat manager app No, it doesn't and I'm not really sure that it makes sense to try to add it. A primary function of the manager app is to allow you to start and stop individual applications without stopping the container and to deploy and undeploy individual applications.

Deploy a Spring Boot Application into Tomcat, Create a Spring Boot 2.1 app with Java 11 and deploy into Tomcat 9. Often you need console access to the server from which you pull the latest When you click on the Manager App button the user details you entered In this chapter, you are going to learn how to create a WAR file and deploy the Spring Boot application in Tomcat web server. Spring Boot Servlet Initializer. The traditional way of deployment is making the Spring Boot Application @SpringBootApplication class extend the SpringBootServletInitializer class. Spring Boot Servlet Initializer class file allows you to configure the application when it is launched by using Servlet Container.

How to Configure Spring Boot Tomcat, Learn how to reconfigure the embedded Tomcat server in Spring Boot for some common use cases. Spring Boot Configure Tomcat SSL over HTTPS. by MemoryNotFound · October 31, 2017

Standardengine(tomcat).standardhost(localhost).tomcatembeddedcontext() failed to start

Failed to start component (StandardEngine(Tomcat).StandardHost , Failed to start component (StandardEngine(Tomcat).StandardHost(localhost). TomcatEmbeddedContext()) at java.util.concurrent. void main(String() args) ( SpringApplication.run(SpringBootApplication.class, args); ) ) //ServletInitializer.​java Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Learn more Failed to start component (StandardEngine(Tomcat).StandardHost(localhost).TomcatEmbeddedContext())

Unable to start embedded Tomcat · Issue #10 · spring-guides/gs , StandardHost(localhost).TomcatEmbeddedContext() failed to start -> (Help 1). I tried changing the StandardEngine : Starting Servlet Engine: Apache Tomcat/​8.5.34 2018-10-22 09:55:15.309 INFO 8552 --- (ost-startStop-1) o.a.catalina.core. Spring boot built Failed, Failed to start component (StandardEngine(Tomcat).StandardHost(localhost).StandardContext()) Ask Question Asked 3 years, 5 months ago

Spring boot test fails to start tomcat due to some sleuth and spring , LifecycleException: Failed to start component (StandardEngine(Tomcat). TomcatEmbeddedContext()) at org.apache.catalina.util. StandardHost(localhost​)) at java.util.concurrent. #param args args */ public static void main(String() args) ( // BasicConfigurator.configure(); Set up a simple configuration that logs on the all i found solution for whatever you all get the exception like. org.apache.catalina.LifecycleException: Failed to start component (StandardEngine(Catalina).StandardHost(localhost).StandardContext()). the problem with bulid path of the jars. To over come this problem. place all jars in 'WebContent/lib' whatever you need to in your project.

Unable to start embedded tomcat java 11

SpringBoot - Unable to Start embedded TomCat, Go to project structure -> Project -> Project SDK and change the java version. I hope it helps. A 'good' pom would have 'spring-boot-starter-web' (for convenience) or else all the dependencies included in the starter listed individually. Just check that you have them. Build artifacts, debug, and deploy to major application servers in the cloud. Apache Tomcat, WildFly, Payara Server, Docker and others.

Spring boot: Unable to start embedded Tomcat servlet container , You need to add the tomcat dependency in your pom <dependency> <groupId>​org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</​artifactId> </dependency> and then rerun the code ,and it told me that java.​lang. Chids 2,066○1111 silver badges○2020 bronze badges. unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat. I have gone through all of the stackoverflow and articles related to Unable to start embedded tomcat.

Unable to start embedded Tomcat · Issue #10 · spring-guides/gs , ApplicationContextException: Unable to start embedded container; nested exception is onRefresh(EmbeddedWebApplicationContext.java:140) have included spring-boot-starter-web and spring-boot-starter-tomcat dependencies in your pom.xml 11. 12. 13. 14. 15. 16. 17. 18. <?xml version='1.0' encoding='​UTF-8'?>. (ERROR) Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.0.5.RELEASE:run (default-cli) on project eureka-service: An exception occurred while running. null: InvocationTargetException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat

Unable to start web server spring-boot

ApplicationContextException: Unable to start , Case 1: @SpringBootApplication annotation missing in your spring boot starter class. Case 2: For non web application, disable web application Spring Boot jar Unable to start web server due to missing ServletWebServerFactory bean Hot Network Questions Did Trump order tear gas to be used on protesters to clear a pathway to a church for a photoshot?

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Spring Boot Doesn't Start Tomcat

Ip cam viewer lite for pc. Exception starting up SpringBootApplication, Below is the stack trace in starting up a SpringBoot application. ApplicationContextException: Unable to start web server; nested exception is I have the following Main code in my SpringBoot application ```java package com.oc.springsample; import org.springframework.boot.SpringApplication; public

Spring Boot Don't Start Tomcat

Fixing Spring Boot error 'Unable to start , I was building a new Spring WebFlux application with Spring Boot. ApplicationContextException: Unable to start web server; nested The solution is easy once the root cause is identified. We can either: Update Maven dependencies to exclude spring-webmvc, or; Set the web application type to WebApplicationType.REACTIVE explicitly, as shown below.

Spring Boot Not Start Tomcat

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Eclipse Mysql Driver Jar Download

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Download Mysql Driver For Java

Mysql Driver Download

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Mysql Driver Jar File

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Create and Export MySQL JDBC driver. In the file system extract the MySQL driver JAR from the downloaded MySQL ZIP file to the downloads folder: In your Eclipse. MySQL Native Driver for PHP; Other Downloads. MySQL Connector/J is the official JDBC driver for MySQL. MySQL Connector/J 8.0 is compatible with all MySQL. I have downloaded the mysql-connector-java-5.1.24-bin.jar I. How to add the JDBC mysql driver to an Eclipse. After this you will find that the.jar driver. Download JDBC driver JAR files for MySQL, SQL Server, Oracle, PostgreSQL, SQLite, Derby, Microsoft Access. Maven dependency is also included. MySQL Native Driver for PHP; Other Downloads; Download Connector/J MySQL open source software is provided. MySQL Connector/J is the official JDBC driver for MySQL. I have the jar file: mysql-connector-java-5.1.14-bin.jar and I. How to add mysql driver jar file in eclipse. How to add the JDBC mysql driver to an Eclipse.

This question already has an answer here:

Download JDBC driver JAR files for MySQL, SQL Server, Oracle, PostgreSQL, SQLite, Derby, Microsoft Access. Maven dependency is also included.

How to install JDBC driver in Eclipse web project without facing java.lang.ClassNotFoundexception 13 answers

I have downloaded the mysql-connector-java-5.1.24-bin.jar

I have created a lib folder in my project and put the jar in there.

properties of project->build path->add JAR and selected the JAR above.

I still get java.sql.SQLException: No suitable driver found for jdbc:mysql//localhost:3306/mysql

I am using mysql 5.5The code:

If I add Class.forName('com.mysql.jdbc.Driver'); before Connection connection = DriverManager.getConnection(mySqlUrl, userInfo); I get java.lang.ClassNotFoundException: com.mysql.jdbc.Driver

Itay Moav -Malimovka

Itay Moav -MalimovkaItay Moav -Malimovka

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marked as duplicate by BalusC javaOct 9 '15 at 7:58

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. https://renewadvance265.tumblr.com/post//vrmlpad-30-crack-free-download.

7 Answers

Try to insert this:

before getting the JDBC Connection.

niculareniculare

1: I have downloaded the mysql-connector-java-5.1.24-bin.jar

Okay.

2: I have created a lib folder in my project and put the jar in there.

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Wrong. You need to drop JAR in /WEB-INF/lib folder. You don't need to create any additional folders.

3: properties of project->build path->add JAR and selected the JAR above.

Odbc Mysql Driver Download

Unnecessary. Undo it all to avoid possible conflicts.

4: I still get java.sql.SQLException: No suitable driver found for jdbc:mysql//localhost:3306/mysql

This exception can have 2 causes:

JDBC driver is not in runtime classpath. This is to be solved by doing 2) the right way.

JDBC URL is not recognized by any of the loaded JDBC drivers. Indeed, the JDBC URL is wrong, there should as per the MySQL JDBC driver documentation be another colon between the scheme and the host.

BalusCBalusC

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You can paste the .jar file of the driver in the Java setup instead of adding it to each project that you create. Paste it in C:Program FilesJavajre7libext or wherever you have installed java.

After this you will find that the .jar driver is enlisted in the library folder of your created project(JRE system library) in the IDE. No need to add it repetitively.

Vaibhav JoshiVaibhav Joshi

copy mysql-connector-java-5.1.24-bin.jar

Paste it into Apache Software FoundationTomcat 6.0lib<--here-->

Restart Your Server from Eclipes.

Done

DipanjanDipanjan

you haven't loaded driver into memory. use this following in init()

Also, you missed a colon (:) in url, use this

AnkitAnkit

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if you are getting this exception again and again then download my-sql connector and paste in tomcat/WEB-INF/lib folder..note that some times WEB-INF folder does not contains lib folder, at that time manually create lib folder and paste mysql connector in that folder.definitely this will work.if still you got problem then check that your jdk must match your system. i.e if your system is 64 bit then jdk must be 64 bit

Download Mysql Driver For Java

amol a. suryawanshiamol a. suryawanshi

Try this tutorial it has the explanation and it will be helpfulhttp://www.ccs.neu.edu/home/kathleen/classes/cs3200/JDBCtutorial.pdf

Prem ChandranPrem Chandran

Not the answer you're looking for? Browse other questions tagged javamysqlservletsjdbcdriver or ask your own question.

Active3 years, 6 months ago

I have the jar file: mysql-connector-java-5.1.14-bin.jar and I want to add it to my project.I add the jar at this way: project-> properties -> (Java Build Path) Libraries and add it from external jars. But when I try to use it and write:

import com.mysql.jdbc.jdbc2.optional.MysqlConnectionPoolDataSource;

import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;

Mysql Driver Download

I get error under 'com.mysql'.

What is my mistake?

user1994587

user1994587user1994587

1 Answer

If the JAR file for the JDBC driver appears in the 'Referenced Libraries' branch of the project, like this:

then you don't need an import statement for it. Just use DriverManager.getConnection() and Java should be able to find the JDBC driver itself.

Gord ThompsonGord Thompson

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Jdbc Driver For Mysql Download

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Dark Mode Eclipse Java

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Bathroom behind toilet storage. However, now it provides more than just a Dark theme. It contains multiple adjustable themes to make your Eclipse IDE not only prettier but also better and easier to work with. The custom icons and color schemes in the Dark mode makes the IDE, in my opinion, visually easier to read. Now you have the ability to adapt the Eclipse visuals to your. Granted, you can forgo buying Eclipse 12 — the latest version of Eclipse — and take advantage of Smart Invert to mimic a dark mode on your iPhone instead, but the feature can invert colors that shouldn't be for a less-than-desirable look. Or you can wait for a system-wide dark mode to officially arrive when the next major iOS iteration. Step 1: Go to Window - Preferences in Eclipse Luna. Step 2: Go to General - Appearance and click on Appearance. We will find the UI as given below. Step 3: To change theme, click on theme select box, and choose Dark then click on OK. The eclipse theme will be changed. I was able to do so with the following steps: Window General Appearance Theme: Dark. File Import General Preferences Browse: theme-25999.epf Finish. When you have done that go to. Window - Preferences - General - Appearance. And change the theme from GTK (or what ever it is currently) to Dark Juno (or Dark). That will change the UI to a nice dark theme but to get the complete look and feel you can get the Eclipse Color Theme plugin from eclipsecolorthemes.org.

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Bug IDTitleStatus509189Setup errorsNEW507509Adding new CFT feature to JEE package for Neon.2 and OxygenNEW512008Add Spring toolingNEW512880Include SpotBugs in Java and Java EE packageNEW513864Something wrong with Eclipse Neon.2 (4.6.2) when it uses in fedora ( dell xps 15 HD 3840x2160 )NEW513604Exported app client project is dependent on appclient.batNEW503463Reopen Update does not workNEW496632AssertionFailedException in AbstractTextEditor$TextEditorSavableNEW485788Include Eclipse Tools for Cloud Foundry (CFT) as part of the JEE PackageNEW483561Inspect window close when try to resizeNEW488993Include Memory Analyzer Tools in Java EE packageNEW492707Upgrading to Mars 4.5.2 fails because of missing itemsNEW494586Update New JEE Welcome Quicklinks to create JavaEE Web project and JSDT ProjectNEW515330Problems occurred when invoking code from plug-in: 'org.eclipse.jface'.NEW518580JavaEE package not listed on main Oxygen dev builds download pageNEW544627ITS team has blocked eclipse several operations due to absence of digital signatureNEW542925Eclipse IDE for Enterprise Java Developers 2018-12 R final release disables content assist by default.NEW550519Eclipse IDE for Java EE Developers NEON 4.6 - Maven projectNEW551096Unable to add the jar files are the options are being disabledNEW551408Include Wild Web Developer into Eclipse IDE for Enterprise Java DevelopersNEW538811Problem Opening Wizard for an installed pluginNEW536107Cant Delete projectsNEW522712Eclipse for JEE does not include PDE extension point schemasNEW520315Toolbar contatining run,debug and breakpoints missing if customize perspective is used than eclipse oxygen crashes in ubuntu 64bitNEW533338Not able to load the JAVA EE perspective and not able to see Server option in Neon 4.6.2NEW533975(Accessibility) issues in Windows 'high contrast' mode.NEW535551EPP Photon RC2 has duplicate vmargs in eclipse.iniNEW481601Packages MUST set lower version of featureNEW472108Problew when try to open EclipseNEW380080Cannot upgrade to Eclipse IDE for Java EE Developers 1.5.0.20120504-1855NEW368367Eclipse.exe ICON mismatchNEW384419(KeyBindings) Can't unbind the ESC key from closing a detached editorNEW388311JUNO j2ee ide is not starting. throws an error saying to NEW414369out of heap while building the workspace for most akka projects - fixed with increased heapNEW389859duplicate Information in the Progress tab appears twiceNEW363588New 'global debug toolbar' added to jee perspective by defaultNEW362048eclipse java ee ide update problemNEW306492The console and the editor cannot display the character exactlyNEW265948It is not possible to uninstall any component from eclipse bundle (e.g. j2ee)NEW309935When started Eclipse displays a message: the Eclipse executable launcher was unable to locate its companion shared libraryNEW320614Update of Java EE IDE fails due to missing dependency on MylynNEW361062Periodic workspace saveNEW239377Could improve 'how to get source' instructionsNEW414663IDE fails to load (Mac) after updateNEW470430Oomph preference recorder causing unexpected resultsNEW466103M6 downloads available today are invalid packages for OSX. I have tried from different mirrors.NEW460941dark theme breaks on JEE views and featuresNEW462517An error has occurred. See error log for more details.NEW459313Eclipse crashesNEW459163Update problem - no repository - for Target Management HomeNEW429321Include Mylyn Builds component in packagesNEW429371j2ee mavenNEW441843By default enable 'Refresh using native hooks' and 'Refresh on access'NEW464007Improve Welcome/About descriptionNEW367258Duplicate parameters in eclipse.ini fileASSIGNED498145Bundle-Vendor/Bundle-Name not properly externalizedASSIGNED471683EGit Error on every Save operation - An internal error occurred during: 'Computing Git status for repository ..'REOPENED428098'Invalid' message when trying to unzipREOPENED

Bugs listed in italics indicate the bug has been moved to another project.

Bug IDTitleStatus22661320080410-1900 brokenVERIFIED276608tm.terminal should not include source, to save spaceVERIFIED316420use package icon on web pageRESOLVED323045The MD5 given for this download does not matchRESOLVED315701webtools/updates site needs to be changedRESOLVED314969add jsf feature to Java EE IDE packageRESOLVED312527eclipse-jee-helios-M7-win32 doesn't include the JAX-WS toolRESOLVED328948EclipseGalileo Hanging frequently.RESOLVED330867EE package includes PDE indirectly, but should be directRESOLVED349073'Too many open files' during signing check, while installing more stuffRESOLVED350150Include m2e as part of this packageRESOLVED344903Welcome screen has some out-of-place (out dated?) itemsRESOLVED343270Update JEE package with new Dali Common featuresRESOLVED333300only 'Generic' displayed in the extension pointRESOLVED312353restore capability bundlesRESOLVED311610(Java EE package) Community and JPA links in welcome page goes to a 'Not Found' pageRESOLVED280566add capabilities (and preferences)RESOLVED280653Welcome Page: Standard links are not working (Samples, Tutorials, ..)RESOLVED279201update site list is not correct in packageRESOLVED278469Runtime-only features should not be installed in an IDERESOLVED278274improved about box graphicRESOLVED280654Welcome Page: Standard links are not working (Samples, Tutorials, ..)RESOLVED280655Welcome Page: Standard links are not working (Samples, Tutorials, ..)RESOLVED353703Cannot update Eclipse Platform in JEE packageRESOLVED304451javax.transaction is configured as framework extensionRESOLVED300913remove references to uncertain capabilities bundlesRESOLVED280710progress message steps on image textRESOLVED278204splash progress text should be whiteRESOLVED387136Include egit as part of Java EE PackageRESOLVED514206Include EclEmma in JavaEE packageRESOLVED520600Exit 13RESOLVED512009Add angularJS toolsRESOLVED503321Update does not workRESOLVED500188Virtual Machine IssueRESOLVED528430m2e to download sources by defaultRESOLVED533441Hibernate tools crash to read metadata from SQL server 2014 with sqljdbc4.jar and authx64sqljdbc_auth.dllRESOLVED543563Can't install plugging JautoDocRESOLVED547647Check for updatesRESOLVED539339Rename 'Eclipse IDE for Java EE developers' to 'Eclipse IDE for Enterprise Java developers'?RESOLVED537514Regression: Java 10 support missing from WTP Photon 4.8.0RESOLVED534618(Tips) (Photon) (jee) Include Tip of the DayRESOLVED496365Not able to download set up eclipse jee juno SR1RESOLVED493596(Welcome) Adopt Solstice theme for JEE packageRESOLVED413545Kepler Java EE package missing key m2e bundlesRESOLVED414370scalaRESOLVED407108ECLIPSE_.RSA in org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar does not match the one from Eclipse Juno SR1 (4.2.1)RESOLVED398422JEE Package displays git configuration dialog on startupRESOLVED278158need build to handle about.mappings?RESOLVED429370Updating EPP Java EE Windows package from Kepler SR1 to SR2 failsRESOLVED461652Eclipse would not launch, returned exit code=13RESOLVED487397Chrome V8 debugger is crashing on console outputRESOLVED492028Add optional chromium Debugger feature to JEE EPP for NeonRESOLVED478181Include Buildship as part of JavaEE PackageRESOLVED477914Mars can't connect to Websphere v 8.5.xRESOLVED469665erro oracle packRESOLVED363589still seeing some pollution of update sites in Java EE M3RESOLVED281039the What's new link on the Welcome page does not workRESOLVED248051Perspective TabRESOLVED248494IDE for Java EE Developers won't start on 64-bit VistaRESOLVED247389Why are not all JEE Project upate sites enabled?RESOLVED242191Ganymede JEE Package dist for MacOSX has old 'Software Updates' componentRESOLVED239275packages should enable all their primary update sites (by default)RESOLVED241596Equinox p2 installer failed to install eclipse-java-ganymede-win32.zipRESOLVED249885Package fails after update because there is no metadata for the launcher.libraryRESOLVED278157Need build to pickup 'welcome' bundleRESOLVED260616PROBLEM with Eclipse Ganymede UPDATERESOLVED264465org.eclipse.pde.p2 feature should be in eclipse-jee-ganymedeRESOLVED259813Default Eclipse distro cannot upgradeRESOLVED259686Automatic updates fail.RESOLVED258581X86_64 release can not be unzip & untar with X86_64 linuxRESOLVED238280Missing DTP features in initial JEE 3.4 releaseRESOLVED237652Crashes on startupRESOLVED231974Ganymede M7 first startup takes several minuts and bundled plugins are not detectedRESOLVED232269Pre-installed packages are not installed. And cannot be eitherRESOLVED231078JEE package update to Ganymede M7RESOLVED227870icu4j jar packaged in the JavaEE install is different from the M6/M6aRESOLVED227351Need to filter out TPTP features from Mac. distributions.RESOLVED227711missing program iconRESOLVED233009JEE package configuration updatesRESOLVED234533added forgotten feature, EclipseLink Support to JEERESOLVED237424datatools doc error in JEE packageRESOLVED237425Warning logged about undefined tm.terminal commandRESOLVED23742364 bit package opens to Java PerspectiveRESOLVED235338Weird Small WindowRESOLVED235089Package is missing 'capabilities'RESOLVED265912md5 files are 'hard to read'RESOLVED250523Ganymede hangs when clicking View Error LogRESOLVED278141No build ID in about dialog of JEE 3.5rc1 packageRESOLVED276417externailize strings for jee bundleRESOLVED278142No Capabilities Preference Page in JEE 3.5rc1RESOLVED275817Eclipse says 'Java EE IDE Package' as application nameRESOLVED276415Another rev of featureRESOLVED269915New&Noteworthy for DSDP-TM missing on JEE EPP Ganymede SR2 pageRESOLVED277394remove pde from jee package or default 'on' capabilties.RESOLVED277775Some start to product customizationRESOLVED277863Missing Eclipse Icon under LinuxRESOLVED275596default workspace is wrong directoryRESOLVED275389A few language improvements for M7RESOLVED272947Addition of EclipseLink Galileo bundles to the Java EE packageRESOLVED271748There is no xsd and xsd.edit feature in the jee Galileo M6 packageRESOLVED276606DTP features should not include source, to save sizeRESOLVED278152should not jar up product pluginRESOLVED274638Problem while installing Eclipse UpdatesRESOLVED276609jst and wst features should be expandedRESOLVED275375Unusual exception logged on startupRESOLVED278145Jee 3.5rc1 has no window iconRESOLVED306624Error logged on Help > Install due to file:// repositories leaked into packageCLOSED191557Eclipse Tools for Java Enterprise Development contains too muchCLOSED277364'eclipse' symlink present in eclipse-SDK download is missing from packageCLOSED279254Welcome page links don't work without Internet ConnectivityCLOSED540983why no Eclipse IDE for Java EE Developers releases in milestone builds?CLOSED278154eclipse.ini has wrong splash screenCLOSED538661Upgrade to Eclipse 2018-09 M3 breaks SQL editor.CLOSED238541Download page doesn't detect 64 bit linux, and offers 32bit downloadCLOSED525617Eclipse Build download is failing - servers are downCLOSED278140Help contents not available in JEE 3.5rc1 packageCLOSED518583There was an eclipse platform Oxygen RC4a build, but the latest EPP is RC3.CLOSED468874Unsigned Content warning due to javax.persistence when installing JEE package with eclipse-installerCLOSED417632Rename JEE packed into 'Web Development ' ?CLOSED419334Kick PDE out of JEE packageCLOSED422747add code recommenders to jee packageCLOSED317003Ganymede-jee-64Bit-Linux-Download brokenCLOSED385028Java EE package should say it requires a 1.6 JRECLOSED338601Update JEE package with new Dali feature namesCLOSED358808EULA for the package does not match the other onesCLOSED374545javax.transaction plugin is not being loaded.CLOSED424291Cannot install remote marketplace locationsCLOSED247698RSE Terminal uses ugly fonts in JEE packageCLOSED462087The JEE package refer to outdated TM Terminal featuresCLOSED477947Unable to install SOAP UI PluginCLOSED312197WebPage Editor don´t recognize EL 2.2 method call with parameterCLOSED313517Add MPC to the JEE packageCLOSED459007Eclispe is damn slow.CLOSED435447NPE in ReadManagerCLOSED436627Fatal Error starting EclipseCLOSED436896Unusual URISyntaxException exception in log first time help is indexedCLOSED486131can't extract eclipseCLOSED

Bugs listed in italics indicate the bug has been moved to another project.

File a Bug on this Package

New and Noteworthy

Eclipse Web Tools Platform Project Eclipse Platform Eclipse Mylyn Eclipse EGit

Testing Details

Great news! That modern dark UI you always wished the Eclipse IDE had is available for free, right now. We are pleased to introduce the recently released Darkest Dark theme for the Eclipse IDE. This is a fresh new theme designed from the ground up to give you the sharpest contrast and a new set of flat, high-contrast icons.

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Check out the level of change, from brightest day to darkest dark night, below:

See Full List On Github.com

Want to give it a try? Get the Darkest Dark theme from the Eclipse Marketplace for free.

In a moment, we'll cover a bit of how we built this slick plugin, but first, we need to ask you for a bit of help so we can ensure that every Eclipse plugin looks amazing.

Here's the problem, there are just a lot of plugins out there and we all use different sets! So, once you install Darkest Dark, if you see something that is really funky looking, please take a moment to add an entry in our Theme Problems forum. We're targeting first the more popular plugins and places where things are just flat broken.These are things like really bad icons, or poor color choices which we can normally address very quickly if the path to reproduction is simple. Darkest Dark uses our evergreen update technology so as soon as we fix a couple of items you'll automatically get all the updates pushed into your installations so you're never out of date. Thanks in advance -- we really appreciate it!

So, how did we make this?

It was actually very hard, because it isn't really a theme. It just plays one in your Eclipse installation. Creating the Darkest Dark theme required not only using E4 styling but also creative usage of OSGi to intercept low-level calls. Our code intercepts the original icon load for something like the toolbar and returns an on-the-fly generated replacement icon. This gives the benefit of avoiding loading the original icon as well as ensuring full HiDPI support. Of course, it also provides the flexibility to tweak the colors of icons without rebuilding any images.

Where things get even hairier this how developers across the plugin community have used different patterns in building their slick UIs. For instance, there are visual designers that let people drag items together which use a combination of default colors from the theme and hardcoded colors like a bright yellow. Or other plugins where developers were using custom colors in the background of the table which contrasted on dark. In these examples, we have to intercept color load and have to return back an alternate color.

Whats up next?

Dark Mode Eclipse Java

To help us in making the replacement icons, we put together a cool Icon Editor which lets you see all of the icons that have been loaded in the Eclipse IDE including frequency of use, and create a replacement for the image. Even cooler is that when you save the updated icon, it is live-replaced into your running Eclipse IDE for many controls. I believe right now we are just missing a couple places like replacing loaded images in Image Registry caches. You can even click control-shift with your mouse over an item to find the source image. With this technology, we'll be allowing you and the community to suggest replacement icons for plugins we've missed and we'll do a light weight moderation before releasing them back to the community!

We hope you enjoy using the darkest dark theme and that you'll forgive if there are still a couple rough edges as this multi-engineer multi-month project has been a tough one. It was certainly a much larger undertaking than what we anticipated when we first started, but that turned into a benefit because if we'd known the true level of effort our management team might not have approved it!

We want to thank a few projects in particular for helping make this possible. First and foremost is Equinox and OSGi for providing the foundation that makes these creative engineering solutions possible in the first place. The Eclipse Color Theme plugin is included as part of the Darkest Dark theme to provide configurable editor colors. Work by the Eclipse platform team in Oxygen is brought forward to help clean up a couple rough areas like Button and Table header coloring on Windows. Finally, Code Affine did some nice work with flat scrollbars that provided a base to rid the UI of those nasty Windows scrollbars.

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In closing I just want to point out that the Darkest Dark theme isn't just free to use, we've also made it free to redistribute. So if you have any products you've built on theEclipse platform, you may freely include Darkest Dark to deliver a rich modern dark UX to your users.

Dark Mode Eclipse Java Tutorial

About the Author

[bestdevopscourse]

What are DevOps tools?

DevOps is a fixed of practices that highlights collaboration, communique, and automation for the duration of the application improvement lifecycle. Continuous Delivery permits teams to launch a build after continuous testing mechanically any time.

The integration of Development and Operations brings a new angle to software program development. If you’re new to DevOps practices, or seeking to enhance your current approaches, it can be a venture to know which device is first-class on your crew.

We’ve prepare this list to help you make an knowledgeable decision on which equipment ought to be a part of your stack. So, permit’s check the 10 great DevOps equipment, from automated construct gear to software overall performance tracking platforms.

The first-rate DevOps tools  for 2020

Gradle

Your DevOps device stack will need a reliable construct tool. Apache Ant and Maven ruled the automated construct tools marketplace for many years, however Gradle showed up at the scene in 2009, and its popularity has steadily grown considering then. Gradle is an extremely flexible device which allows you to write your code in Java, C++, Python, or other languages. Gradle is likewise supported with the aid of famous IDEs which include NetBeans, Eclipse, and IntelliJ IDEA. If that doesn’t persuade you, it'd assist to recognize that Google also chose it as the respectable construct device for Android Studio.

The best thing approximately Gradle is incremental builds, as they store a pleasant quantity of collect time. According to Gradle’s overall performance measurements, it’s up to 100 instances quicker than Maven. This is in part because of incrementally, but additionally because of Gradle’s construct cache and daemon. The construct cache reuses task outputs, at the same time as the Gradle Daemon maintains build records hot in reminiscence in-among builds.

All in all, Gradle allows quicker transport and comes with a number of configuration possibilities.

Git

Git is one of the maximum famous DevOps gear, broadly used throughout the software enterprise. It’s a dispensed SCM (source code control) device, loved with the aid of far flung groups and open supply contributors. Git allows you to music the progress of your development paintings. You can store distinct versions of your supply code and go back to a previous model when important. It’s additionally first-rate for experimenting, as you could create separate branches and merge new features handiest after they’re ready to go.

  Jenkins

Jenkins is the move-to DevOps automation tool for many software program development groups. It’s an open source CI/CD server that lets in you to automate the distinct ranges of your transport pipeline. The predominant reason for Jenkins’ reputation is its large plugin surroundings. Currently, it offers greater than 1,000 plugins, so it integrates with nearly all DevOps tools, from Docker to Puppet.

Bamboo

Bamboo has many pre-built functionalities that you need to installation manually in Jenkins. This is likewise the reason why Bamboo has fewer plugins (round 100 in comparison to Jenkins’ one thousand+). In truth, you don’t want that many plugins with Bamboo, because it does many stuff out-of-the-box.

Bamboo seamlessly integrates with other Atlas Sian merchandise inclusive of Jira and Bitbucket. You also have get right of entry to integrated Git and Mercurial branching workflows and check environments. All in all, Bamboo can prevent a variety of configuration time. It additionally comes with a greater intuitive UI with tooltips, auto-of entirety, and different available features.

Docker

Docker has been the primary field platform considering that its release in 2013 and keeps to improve. It’s additionally thought of as one of the maximum essential DevOps equipment accessible. Docker has made containerization popular in the tech international, particularly as it makes dispensed development viable and automates the deployment of your apps. It isolates applications into separate bins, in order that they grow to be portable and greater secure. Docker apps are also OS and platform independent. You can use Docker boxes in place of virtual machines such as Virtual Box.

Kubernetes

A Kubernetes cluster includes one grasp and several employee nodes. The grasp node implements your pre-described regulations and deploys the bins to the employee nodes. Kubernetes will pay interest to the whole thing. For example, it notices whilst a worker node is down and redistributes the packing containers every time it’s necessary.

7.Puppet Enterprise

Puppet Enterprise is a go-platform configuration management platform. It permits you to control your infrastructure as code. As it automates infrastructure control, you can deliver software quicker and greater securely. Puppet also affords developers with an open-source device for smaller projects. However, if you are coping with a larger infrastructure, you may discover cost in Puppet Enterprise’s more capabilities, consisting of:

Real-time reports

Role-based totally get entry to control

Node management

With Puppet Enterprise, you can manipulate multiple groups and hundreds of resources. It robotically is aware relationships within your infrastructure. It offers with dependencies and handles screw ups neatly. When it encounters a failed configuration, it skips all the dependent configurations as nicely. The first-rate factor about Puppet is that it has extra than 5,000 modules and integrates with many famous DevOps gear.

Ansible

Ansible is a configuration management device, much like Puppet and Chef. Its main selling factors in comparison to different similar DevOps tools are simplicity and simplicity of use. Ansible follows the equal Infrastructure As Code (IAC) technique as Puppet. However, it makes use of the exceptional simple YAML syntax. With Ansible, you can define obligations in YAML, even as Puppet has its own declarative language.

Agentless architecture is another frequently referred to function of Ansible. As no daemons or sellers run within the heritage, Ansible is a comfy and light-weight answer for configuration control automation. Similar to Puppet, Ansible also has numerous modules.

9.Nagios

Nagios is one of the most popular loose and open supply DevOps monitoring equipment. It allows you to screen your infrastructure so you can locate and fix troubles. With Nagios, you can preserve facts of occasions, outages, and screw ups. You can also preserve an eye on tendencies with the help of Nagios’ graphs and reports. This manner, you can forecast outages and errors and stumble on safety threats.

Nagios gives four open source tracking answers:

Nagios Core

Nagios XI

Nagios Log Server

Nagios Fusion

Nagios Core is a command line tool, with all of the simple functionalities. You also can choose Nagios XI that comes with an internet-based GUI and monitoring wizard. Nagios writes a handy comparison of their talents.

Nagios Log Server lets you seek log statistics and installation signals approximately capability threats. And, Nagios Fusion permits you to monitor multiple networks at the same time.

Raygun

Raygun is a global-class error tracking and crash reporting platform. Application overall performance tracking (APM) is its maximum recent product. Raygun’s DevOps tool allows you diagnose performance troubles and tracking them returned to the precise line of code, feature, or API call. The APM tool additionally fits well with Raygun’s blunders management workflow. For example, it routinely identifies your highest precedence problems and creates troubles for you.

Raygun APM let you make the most out of other DevOps equipment, as you're continually notified approximately the troubles. Since it automatically hyperlinks errors lower back to the source code, Raygun brings Development and Operations together via offering one supply of fact for the entire group the reason of errors and overall performance problems.

Uses of DevOps:

You can benefit data within the concepts of continuous development and deployment, automation of configuration management, inter-crew collaboration and IT carrier agility, the usage of DevOps tools such as Git, Docker, Jenkins and more.

Finding the nice DevOps gear takes some trying out and experimentation. It generally takes extra time to set up and configure open-supply equipment. Most industrial DevOps tools include free trials that can help you check and examine them at no cost. It all boils down to your desires and desires.

For more information about Devops Training Online, visit igmguru.com.

[rabatfirstsight]

PKIX error in eclipse maven

When encountering a PKIX error during maven update or build in eclipse, this could be due to security/certificate restrictions on your machine from downloading dependencies from a given remote repository.

options:

1. check if JAVA_TOOLS_OPTIONS (or some other similar variable) is set in Windows environment variables and check if -Djavax.net.ssl.trustStore is set there. 

    - if present, check if this variable points to a file other than “C:\Program Files\Java\jrexxx\lib\security\cacerts”. If it does refer to a custom file, it may be using a restricted list of maven repositories and does not include what you need.  In this case, you may force eclipse to not refer to this truststore and use the default truststore in the jdk or jre installation folder instead by adding these in the eclipse.ini found in the eclipse installation folder:

-Djavax.net.ssl.trustStore=C:\Program Files\Java\jrexxx\lib\security\cacerts

-Djava.net.ssl.trustStorePassword=changeit

Save the file (I suggest to create a backup of the original first), and restart eclipse for the changes to take effect.

2. another option is to add the required certificate to the target truststore.  

in admin console in \jre\lib\security\ folder, run:

keytool -import -alias nwcrt -file newcert.cer -keystore cacerts -storepass changeit

Refer here for steps: https://stackoverflow.com/questions/4325263/how-to-import-a-cer-certificate-into-a-java-keystore

[enigmaticlearner]

I wish if there were less errors in this code...

Hello again! In the third week,this blog article we will be discussing about code quality,dependency management and build tools.Maven will be the explicitly discussed topic.

So lets start with code quality! As the blog article title itself says we all wish to have less errors in our source codes.To have less errors here's some useful tips to start coding in a error free method as a start.

1)Code quality

Software developers start from a simple "Hello world" program and then go up to more complex codes when they become more experienced in the field.These kind of codes can contain thousand number of code lines sometimes.At such instances it's hard to focus on correcting the code if an error is identified.This is one of the very important places where "code quality" comes into use. Code quality implies mostly the maintaining quality of code.

To improve this, 1.We can add comments, by this it will help any other person to understand the code. 2.Follow coding conventions. 3.Have separate classes instead of coding a whole program in one single class. 4.Use meaningful terms when coding. Ex:use meaningful method names;for a calculation method we can code as follows Public void Calculate()

If quality of code can be maintained well the code will get less complex.Less complex the code is, more human readable it is. Also errors can be easily tracked out when comments are added at respective places. When the code is maintained well resources will not be wasted unnecessarily.These kinds of codes will have a long span and will not be thrown away once the use is over.Instead they will be used over and over again.

Code quality cannot be measured that much easily.But tools have been implemented nowadays and some of them are, *weighted micro function points *halstead complexity measures *cyclomatic complexity *lines of code *lines of code per method

Languages like Java,C,C++ has tools developed for them itself. Apart from them there are free tools and multi language support tools as well. To detect code quality in HTML there are HTML validators like CSE HTML validators are present.

As the second topic we will be moving on to dependency management and tools related to them.

2)Dependency/Package management

At olden days softwares used to work alone.But the current softwares require third party tools like libraries,third party libraries, frameworks and etc.When these external tools are cooperated with softwares problems arise later.Problems are introduced when integrating together due to different reasons. 1.Having different versions with regard to the main software. 2.Different artifacts may use different ways of integration.

As a remedy to this problem,dependency management tools were introduced.These sophisticated tools will pull things together and integrate things into a common file.

These files will be in the format of, Ex:XML,JSON,Gradle

These files will be used in finding *what dependencies to get *what version of dependency to deal with *which repository to get relevant files from

A repository will have declared dependencies.Dependencies can be fetched using name and version of the relevant dependency. Most of the dependencies have dedicated repositories for themselves. Ex:For Maven, the repository is maven central.

Therefore when a dependency is declared in a configuration file (Ex:composer.JSON) the dependency manager will access the repository to install the dependency that match the exact criteria we have set in the configuration file and make it available in the execution environment for use.

Java has Maven as its specialized tool for dependency management. PHP has Composer and JavaScript has Bower. Other such dependency management tools are Gradle,Node Package Manager.

MAVEN

Talking about Maven, Maven is not only just a dependency management tool. It has other special qualities regarding project management which has made it more specific.It functions as a multi module project management tool and has backward compatibility. Maven has the ability to download its needed files automatically into necessary directories. Developers do not have to code each and every configuration detail in the code.Only a few changes in the pom.XML file is required. Maven is used in back end while JavaScript is used in back end coding.

Maven build life cycle

A build life cycle is a well defined sequence of phases, which define the order in which the goals are to be executed. (according to Tutorials Point) Here a phase is a stage in life cycle.Process for building and distributing particular artifact is clearly defined.Therefore only a few set of commands is to be known by a person when using Maven.Lets look at Maven a little bit more.

Maven life cycle

According to Tutorials Point Maven life cycle is comprised of following phases.

     2.Build profile

Build profile consists of set of configuration values, which can be used to set or override default values of Maven build.Using a build profile we can customize build for different environments such as Production vs development environment.

    3.Build phase This comes inside the build life cycle. If phase is not explicitly defined the default phase is chosen.

Maven uses conventions over configurations;that is coders are not required to create build processes themselves.

Phases include the following, 1.Validate - checks whether configuration and code is proper. 2.test - executes test cases. 3.package - package the class files. 4.install - installs to a maven(local)repository and helps you publish jar files into a local repository. 5.deploy - publish the artifact to the remote repository.

     4.Build goals Each phase is a sequence of goals and each goal is responsible for a specific task.

Ant too is a software like Maven,but since Maven has a build life cycle it's dependency and project management it has proved to work much better.Maven requires only small changes to the configuration.

Maven is available in Eclipse IDE too.

3)Build tools Build tools automates the process of compiling computer source code into binary code.Basically build automation is the act of scripting or automating a wide variety of tasks that software developers do, 1.downloading dependencies 2.compiling source code into binary code 3.packaging that binary code 4.running tasks 5.deployment into production systems

*Use of build tools In small projects developers can manually invoke build processes.But when this comes to larger scale projects this is not practical.When the project becomes large its hard to keep track of what needs to be built,in what sequence and what dependencies are needed in building processes.Using an automation tool,it allows the build process to be more consistent.

Ex:Ant,Maven,Gradle,N Ant,Ms Build

-Build automation types

1.On-demand automation

2.Scheduled automation

3.Triggered automation

-Build automation softwares

4)Other tools used in software coding

As the end of this week’s article four more topics related to coding community will be discussed briefly.

Dev Ops

Dev ops combines software development with information technology operations. This has an agile relationship between development and information technology operations. The goal is to improve the relationship by advocating better communication and collaboration between these two business units.

Continuous integration

This is the development practice that requires coders to integrate code into a repository several times a day. Therefore problems can be detected soon and often.

Configuration management

This is a system engineering process for establishing and maintaining consistency of a product's performance along it's physical attributes throughout it's life cycle. This process is widely used in military field.

Bug tracking tools

These tools are equipped in detecting errors.

Ex:Plutora,software testing,Backlog,Bugzilla

Agile method

This practice is used in most team projects in current days.This has increased team work in team projects.Agile method has proved to be very efficient in many ways.It interacts with the client quite a lot.

Marking the end of another week’s blog article by this.Lets meet again soon with more new and interesting topics.Till then goodbye!

[netmetic]

Building an Event-Driven Kotlin Android App using MQTT and Solace PubSub+ Event Broker: Cloud

MQTT is a lightweight publish-subscribe messaging protocol that’s fast becoming the de facto protocol of choice for Internet of Things (IoT) applications. MQTT’s popularity is largely due to its small bandwidth usage and low power consumption. In this article, we will leverage the Solace PubSub+ Event Broker’s native MQTT capabilities to build a simple event-driven Android app that uses the publish-subscribe messaging pattern. We will be using Kotlin as our programming language of choice when writing the Android app.

Creating a Solace PubSub+ Cloud Messaging Service

To build an event-driven application, you need to connect it to an event broker so that it could send and receive events asynchronously. Use Solace PubSub+ Cloud to create a free Messaging Service. Once the messaging service is up and running, navigate to its Connect tab and note its MQTT Connection Details. These details will later be used to connect our app to the Solace PubSub+ Event Broker.

Building an Event-Driven Android App in Kotlin

We will use the Android Studio IDE to build a new Kotlin project. The project will use the Eclipse Paho MQTT client library as our MQTT client library. This MQTT client library will be wrapped with a helper class that only exposes the methods we’ll need to publish and subscribe to Solace events. After writing the helper class, we will then build a simple Android MainActivity that we can use to subscribe to a user-defined topic and publish messages to the same topic.

Setting up the Kotlin project using Android Studio

After downloading and installing Android Studio, create a new Kotlin project with an Empty Activity by navigating to File > New Project > Empty Activity and selecting Kotlin as the Language.

Configuring the Project and its Dependencies

Once the project is set up, configure the project’s Gradle dependencies by navigating to build.gradle (Project: My Application) and adding the following repository which contains the Eclipse MQTT Paho library:

repositories { // <other repositories that might already exist, we will leave as is> // paho repository maven { url "https://repo.eclipse.org/content/repositories/paho-snapshots/" } }

Navigate to app/build.gradle and add the following dependencies to fetch the Eclipse MQTT Paho client library:

dependencies { // <other dependencies that might already exist, we will leave as is> // paho dependencies implementation 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.1.0' implementation 'org.eclipse.paho:org.eclipse.paho.android.service:1.1.1' }

At this point Android Studio should prompt you to sync these Gradle dependencies to your project. Click on Sync Now to do so.

Next, configure the project’s AndroidManifest.xml file to give the app the required access permissions as well as register the MQTT client library as an Android service:

<manifest ...> // <other user permissions that might already exist, we will leave as is> <uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <application ... // <other configuration that might already exist, we will leave as is> <service android:name="org.eclipse.paho.android.service.MqttService" /> </application> </manifest>

Configuring Broker Connection Details

Once the Android Studio project is set up, create a new Kotlin file – MessagingOptions.kt – that will contain the broker connection details that the app will use to connect to the Solace PubSub+ Event Broker (as noted from the first step):

package com.example.myapplication // Solace PubSub+ Broker Options // Fill in your Solace Cloud PubSub+ Broker's 'MQTT Host' and 'Password' options. // This information can be found under: // https://console.solace.cloud/services/ -> <your-service> -> 'Connect' -> 'MQTT' const val SOLACE_CLIENT_USER_NAME = "solace-cloud-client" const val SOLACE_CLIENT_PASSWORD = "<your-service-password>" const val SOLACE_MQTT_HOST = "tcp://<your-service-mqtt-host>.messaging.solace.cloud:1883" // Other options const val SOLACE_CONNECTION_TIMEOUT = 3 const val SOLACE_CONNECTION_KEEP_ALIVE_INTERVAL = 60 const val SOLACE_CONNECTION_CLEAN_SESSION = true const val SOLACE_CONNECTION_RECONNECT = true

Adding the MQTT helper class

Next, create a new MQTT package and add a helper class to it: MqttClientHelper. This helper class will wrap the MQTT Client library methods that the app will use. The helper class will make use of the MQTT connection options that were previously specified:

package com.example.myapplication.mqtt import android.content.Context import android.util.Log import com.example.myapplication.* import org.eclipse.paho.android.service.MqttAndroidClient import org.eclipse.paho.client.mqttv3.* import org.eclipse.paho.client.mqttv3.MqttClient class MqttClientHelper(context: Context?) { companion object { const val TAG = "MqttClientHelper" } var mqttAndroidClient: MqttAndroidClient val serverUri = SOLACE_MQTT_HOST private val clientId: String = MqttClient.generateClientId() fun setCallback(callback: MqttCallbackExtended?) { mqttAndroidClient.setCallback(callback) } init { mqttAndroidClient = MqttAndroidClient(context, serverUri, clientId) mqttAndroidClient.setCallback(object : MqttCallbackExtended { override fun connectComplete(b: Boolean, s: String) { Log.w(TAG, s) } override fun connectionLost(throwable: Throwable) {} @Throws(Exception::class) override fun messageArrived( topic: String, mqttMessage: MqttMessage ) { Log.w(TAG, mqttMessage.toString()) } override fun deliveryComplete(iMqttDeliveryToken: IMqttDeliveryToken) {} }) connect() } private fun connect() { val mqttConnectOptions = MqttConnectOptions() mqttConnectOptions.isAutomaticReconnect = SOLACE_CONNECTION_RECONNECT mqttConnectOptions.isCleanSession = SOLACE_CONNECTION_CLEAN_SESSION mqttConnectOptions.userName = SOLACE_CLIENT_USER_NAME mqttConnectOptions.password = SOLACE_CLIENT_PASSWORD.toCharArray() mqttConnectOptions.connectionTimeout = SOLACE_CONNECTION_TIMEOUT mqttConnectOptions.keepAliveInterval = SOLACE_CONNECTION_KEEP_ALIVE_INTERVAL try { mqttAndroidClient.connect(mqttConnectOptions, null, object : IMqttActionListener { override fun onSuccess(asyncActionToken: IMqttToken) { val disconnectedBufferOptions = DisconnectedBufferOptions() disconnectedBufferOptions.isBufferEnabled = true disconnectedBufferOptions.bufferSize = 100 disconnectedBufferOptions.isPersistBuffer = false disconnectedBufferOptions.isDeleteOldestMessages = false mqttAndroidClient.setBufferOpts(disconnectedBufferOptions) } override fun onFailure( asyncActionToken: IMqttToken, exception: Throwable ) { Log.w(TAG, "Failed to connect to: $serverUri ; $exception") } }) } catch (ex: MqttException) { ex.printStackTrace() } } fun subscribe(subscriptionTopic: String, qos: Int = 0) { try { mqttAndroidClient.subscribe(subscriptionTopic, qos, null, object : IMqttActionListener { override fun onSuccess(asyncActionToken: IMqttToken) { Log.w(TAG, "Subscribed to topic '$subscriptionTopic'") } override fun onFailure( asyncActionToken: IMqttToken, exception: Throwable ) { Log.w(TAG, "Subscription to topic '$subscriptionTopic' failed!") } }) } catch (ex: MqttException) { System.err.println("Exception whilst subscribing to topic '$subscriptionTopic'") ex.printStackTrace() } } fun publish(topic: String, msg: String, qos: Int = 0) { try { val message = MqttMessage() message.payload = msg.toByteArray() mqttAndroidClient.publish(topic, message.payload, qos, false) Log.d(TAG, "Message published to topic `$topic`: $msg") } catch (e: MqttException) { Log.d(TAG, "Error Publishing to $topic: " + e.message) e.printStackTrace() } } fun isConnected() : Boolean { return mqttAndroidClient.isConnected } fun destroy() { mqttAndroidClient.unregisterResources() mqttAndroidClient.disconnect() } }

Building the App’s Main Activity

At this point, you should have the setup needed to build your own event-driven Android application in whatever way you would like. What follows is an example implementation of a simple Android app that uses a publish-subscribe messaging pattern. The app has three input fields: the topic to subscribe to, the topic to publish to, and the message payload to publish. If subscribed to a topic (e.g. my/topic), you may publish a message to the same topic with a Message Payload of your choosing. By doing so, the app would be publishing the message with the specified message payload to the Solace PubSub+ Event Broker. The broker would then send that message to its subscribers (in this case, the app itself), and the app’s messageArrived() callback would then be triggered to update its Received Message Payloads view.

To build the app above, you will need to copy the following files to your project and rebuild it:

app/src/main/java/com/example/myapplication/MainActivity.kt

app/src/main/res/layout/content_main.xml

app/src/main/res/values/strings.xml

When the app is launched, its MainActivity invokes the MqttClientHelper which in turn attempts to connect to the Solace PubSub+ Event Broker as per its init implementation. The connection details that the init logic uses are described in MessagingOptions.kt. You can verify that the app connected to your Solace PubSub+ Event Broker successfully by navigating to Messaging Services > your-service-name > Manage Service > Client Connections > MQTT &> MQTT Clients in the Solace Cloud Console. You should then see one Paho MQTT client listed under the MQTT Clients tab.

Subscribing to Topics from Other Brokers

The app above while very simplistic in its implementation, could also be used to retrieve events from other applications that are already publishing data to other event brokers.

As part of the covid19-stream-processors project, Solace has made-available topics related to the COVID-19 Coronavirus – aggregated from different sources – as data that’s easily consumable by other event-driven applications. This data is being published – by an event-driven application – to a Solace PubSub+ Event Broker that uses dynamic topics. These dynamic topics allow subscribers to pick, choose, and filter on the specific data that they want to consume.

We will use our Android app, as-is, to subscribe to one of the topics from the event broker that’s serving the covid19-stream-processors data.

Modifying Broker Connection Details

To connect the the covid19-stream-processors event broker, modify the MessagingOptions.kt file as per the connection information from the covid19-stream-processors GitHub page:

const val SOLACE_CLIENT_USER_NAME = "covid-public-client" const val SOLACE_CLIENT_PASSWORD = "covid19" const val SOLACE_MQTT_HOST = "tcp://mr2r9za6fwi0wf.messaging.solace.cloud:1883"

Subscribing to a Topic from an External Broker

After updating MessagingOptions.kt, launch the app and it should notify you that it has connected to the covid19-stream-processors Event Broker (host) at the bottom. Once the app connects successfully, you can then subscribe to one of the topics outlined in the project (e.g. jhu/csse/covid19/raw) by typing it into the input field and selecting SUBSCRIBE. After ~45 seconds, you should begin to see JSON message payloads being received by the Android app.

Conclusion

In this article, we showcased how to create an event-driven Android app with a Solace PubSub+ Cloud Messaging Service as its event broker. The app was implemented in Kotlin using a publish-subscribe messaging pattern to connect to the Solace PubSub+ Event Broker. The established connection used the MQTT messaging protocol as its messaging transport to demonstrate the publish-subscribe model. The app was then used to connect to an external pre-configured event broker to consume public data related to COVID-19 that’s being published by an external application.

The full implementation of the Android app discussed in this article can be found in this GitHub repository.

The post Building an Event-Driven Kotlin Android App using MQTT and Solace PubSub+ Event Broker: Cloud appeared first on Solace.

Building an Event-Driven Kotlin Android App using MQTT and Solace PubSub+ Event Broker: Cloud published first on https://jiohow.tumblr.com/

[holytheoristtastemaker]

The 12 Factor App approach is for defining a clean contract between the application and running environment. The application and running environment can focus on their own domain and will not step into each others’ toes.

You might have heard of the 12 Factor App application development methodology, published by Heroku, and specifically designed to create applications that will serve as the foundation for a Software-as-a-Service offering.

In this article, we will walk you through the 12 Factor App approach.

Why the 12 Factor App?

The 12 Factor App approach for defining a clean contract between the application and running environment. The application and running environment can focus on their own domain and will not step into each others’ toes.

What is the 12 Factor App?

12 Factor App is a methodology, best practices, and manifesto that says apps should:

Use declarative formats for setup automation, to minimize time and cost for new developers joining the project;

Have a clean contract with the underlying operating system, offering maximum portability between execution environments;

Be suitable for deployment on modern cloud platforms, obviating the need for servers and systems administration;

Minimize divergence between development and production, enabling continuous deployment for maximum agility;

And can scale up without significant changes to tooling, architecture, or development practices.

The 12 Factor App has 12 factors.

How to create a 12 Factor App

For the purposes of this article I will examine how to create a 12 Factor App using Eclipse MicroProfile and Kubernetes. Eclipse MicroProfile is an open source project and community, established by the Eclipse Foundation in 2016 and includes members such as IBM, Red Hat, Tomitribe, Payara, LJC, and many others. It adopts lightweight, iterative processes and has a rapid release cycle.

It has 3 releases per year. In February 2010, MicroProfile released MicroProfile 3.3 including:

MicroProfile Config 1.4

MicroProfile Fault Tolerance 2.1

MicroProfile Health 2.2

MicroProfile JWT Authentication 1.1

MicroProfile Metrics 2.3

MicroProfile OpenAPI 1.1

MicroProfile OpenTracing 1.3

MicroProfile Rest Client 1.4

CDI 2.0

Common Annotations 1.3

JAX-RS 2.1

JSON-B 1.0

JSON-P 1.1

Eclipse MicroProfile has about a dozen implementations with various levels of support: Open Liberty, Quarkus, Payara, TomEE, Wildfly, KumuluzEE, Piranha, Apache Launcher, and others.

In this session, I will show you how to use some Eclipse MicroProfile Specs to fulfill the 12 Factor App. Let’s take a look at the 12 Factors one by one and focus on the how aspect.

1. Codebase

You can use GitHub repositories to provide a dedicated codebase per microservice so that each microservice can have its own release schedule. It is important that the codebase is version controlled.

Following the discipline of a single repository for an application forces the teams to analyze the seams of their application, and identify potential monoliths that should be split off into microservices.

2. Dependencies

Instead of packaging the third-party libraries inside your microservice, specify your dependencies in your Maven pom.xml or Gradle settings.gradle file. This enables you to freely move up to newer versions.

3. Config

Configuration is one of the most important factors. The golden rule of developing microservices is to write once, configure everywhere. When changing configuration, you don’t want to repackage your microservices. The way to achieve this is to externalise the configuration from the microservice application code. MicroProfile Config enables you to place configuration in properties files that can be easily updated without recompiling your microservices.

You can then use MicroProfile Config to access configuration “my.string.property” via

Programmatically lookup

Config config =ConfigProvider.getConfig(); config.getValue(“my.string.property”, String.class);

Via CDI Injection@Inject @ConfigProperty(name=”my.string.property”) String myPropV;

The property ”my.string.property” can be stored in System Properties, Environment Variables, or other config sources such as Kubernetes Config Map, etc. In this way, you can update the property without the need to repack the 12 Factor App.

4. Backing services

They should be configurable so that you can easily switch the attached resource by just changing the configuration. Again, MicroProfile Config and MicroProfile Rest Client can help here. MicroProfile Rest Client enables the client to treat backing services as attached resources via the following mechanism:

Specify the interface of the backing services and annotate with @RegisterRestClient

Package com.acme; @Dependent @RegisterRestClient @RegisterProvider(UnknownUrlExceptionMapper.class) @Path("/properties") public interface SystemClient { @GET @Produces(MediaType.APPLICATION_JSON) public Properties getProperties() throws UnknownUrlException, ProcessingException; }

Inject the backing service interface in the client

@Inject @RestClient private SystemClient defaultRestClient;

Bind the backing service via config property

com.acme.SystemClient/mp-rest/url=http://localhost:9080/system

In this case, if you want to swap the attaching resources simply via updating the value of the binding property as long as the services implement the same interface.

5. Build, release, run

The build stage produces an image with the source code. If you use maven, your build stage is when you issue the maven build command, e.g. mvn package.

The Release stage takes the image from the build and package with the config. If you use Docker, the command ”docker build” maps to the release stage, which then pushes the docker image to Docker hub to get ready to move towards the run stage.

The run stage is to execute the image in the execution environment. You can take “docker run” or when you deploy images to Kubernetes when issuing “kubectl apply -f deployment.yaml”.

6. Processes

Microservices should be stateless. REST is a well-adopted transport protocol, and JAX-RS, included in MicroProfile, can be used to achieve a RESTful architecture. Systems that follow the REST paradigm are stateless. In this way, underlying infrastructure can destroy or create new microservices without losing any information.

When using JAX-RS, you will need to define a subclass of Application and JAX-RS resources.

@ApplicationPath("System") public class SystemApplication extends Application {} @Path("properties") public class PropertiesResource { @GET @Produces(MediaType.APPLICATION_JSON) public JsonObject getProperties() {…} }

With the above 2 classes, the endpoint of http://host:port/System/properties will be exposed as a RESTful service.

7. Port binding

Export services using port binding. In the world of microservices, it is common that microservices talk to each other. When deploying them in the cloud, the ports need to change, so it is important to have a way to rebind the port.

MicroProfile Config can help this. You can specify the new port in Kubernetes ConfigMap, and MicroProfile Config automatically picks up the value to give the correct info to the deployed microservices. MicroProfile Rest Client can help with creating client code to connect from one microservice to another.

Refer to 4. Backing Services for the details of MicroProfile Rest Client. Once using MicroProfile, in a different environment, you can specify the backend binding service via the property of ${fully.qualified.interface.name}/mp-rest/url=http://localhost:9080/system

You can use MicroProfile config to specify the property value. If you specify the above property as an environment, you can swap any non-numeric-alpha with _ because of the restriction rules for naming environment variables. For instance, the property name com.acme.SystemClient/mp-rest/url will be com_acme_SystemClient_mp_rest_url.

8. Concurrency

The microservices should be able to be scaled up or down, depending on the workload. Knative autoscaling can help with this.

9. Disposability

Microservices should start up and shut down very fast in order to save costs and improve efficiency. The microservices should be resilient.

MicroProfile Fault Tolerance can help out with this. MicroProfile Fault Tolerance provides the following annotations to make your microservices resilient.

@Retry - recover from a brief network glitch @Timeout - specify a time out in order to prevent from waiting for a long period of time @CircuitBreaker - prevent from a repeatable errors @Bulkhead - prevent faults in one part of the system from cascading to the entire system @Fallback - provide a backup plan

The following example demonstrates the Get operation onClientSide is very resilient. It will respond to its caller within 100 ms, no matter how slow the backend service is. If there is an exception, the fallback operation will be executed.

@Path("/client") @ApplicationScoped public class ClientController { @Inject @RestClient private Service service; @Inject @ConfigProperty(name="conference") String conf; @GET @Path("/test/{parameter}") @Retry @Timeout(100) @Asynchronous @Fallback(fallbackMethod = "fallback") public CompletionStage<String> onClientSide(@PathParam("parameter") String parameter) { return CompletableFuture.completedFuture("We are live @" + conf+ "! "+ service.doSomething(parameter)); } public CompletionStage<String> fallback(@PathParam("parameter") String parameter) { return CompletableFuture.completedFuture("This is my fallback!"); } }

10. Dev/prod parity

The best practice of operating on microservices is keeping development, staging, and production environments as similar as possible in terms of code, people, and environment. Docker images are here to ensure that the environments stay the same so that you don’t run into the problem of “it runs on my laptop”.

SEE ALSO: Kubernetes: How to use readiness, liveness, and startup probes

11. Logs

Treat logs as event streams. The best practice is to system out your logs in JSON format and directly feed to ELK.

12. Admin processes

You should manage admin processes using Kubernetes Jobs so that the process will terminate automatically. You should not bake the admin processes into your microservices.

In summary, using MicroProfile and Kubernetes enables you to build a 12 Factor App. The code examples can be found from the following locations:

https://github.com/Emily-Jiang/vsummit-12factor-app-a

https://github.com/Emily-Jiang/vsummit-12factor-app-b

https://github.com/Emily-Jiang/vssummit-12factor-deployment

References

https://microprofile.io

https://openliberty.io

https://quarkus.io

https://www.12factor.net/

https://kubernetes.io/

https://github.com/Emily-Jiang/vsummit-12factor-app-a

https://github.com/Emily-Jiang/vsummit-12factor-app-b

https://github.com/Emily-Jiang/vssummit-12factor-deployment