#multithreading in spring boot example

[freshyblog07]

Top Java Interview Questions and Answers You Must Know in 2025

Preparing for a Java developer role? Whether you're a fresher or an experienced candidate, being well-versed with common Java interview questions can significantly boost your confidence and chances of landing the job.

In this blog, we’ll cover the most frequently asked Java interview questions along with quick answers and explanations.

📘 Looking for a complete, detailed list of Java interview questions? 👉 Check out the full guide here: Java Interview Questions – Freshy Blog

🔹 Why Java?

Before jumping into questions, let’s quickly recall why Java is such a sought-after language:

Platform independent

Strong community support

Object-oriented

Robust memory management

Used in web, mobile, and enterprise apps

🔸 Basic Java Interview Questions

What is Java? Java is a high-level, object-oriented programming language known for its platform independence via the Java Virtual Machine (JVM).

What are the main features of Java?

Object-Oriented

Secure

Portable

Robust

Multithreaded

What is the difference between JDK, JRE, and JVM?

JDK: Development kit for Java

JRE: Environment to run Java applications

JVM: Java Virtual Machine that executes code

🔸 OOPs & Core Concepts Questions

What is inheritance in Java? Inheritance allows one class to acquire properties and methods of another class using extends.

What is the difference between method overloading and overriding?

Overloading: Same method name with different parameters in the same class

Overriding: Same method signature in child and parent class

🔸 Advanced Java Interview Questions

What is a Java ClassLoader? A part of JVM that loads classes during runtime.

What is the difference between HashMap and Hashtable?

HashMap: Non-synchronized, allows one null key

Hashtable: Thread-safe, doesn’t allow null keys/values

Explain exception handling in Java. Using try-catch-finally blocks to gracefully handle run-time errors.

📚 Want More Questions with Answers?

These are just a few of the most asked Java questions. If you're preparing for interviews and want more in-depth explanations and examples:

🔗 Visit the full post here: 👉 https://www.freshyblog.com/java-interview-questions/

It includes:

Java 8 features

Multithreading questions

Collections framework

Spring Boot & JDBC-related questions

Real interview scenarios

✅ Final Tips for Java Interviews

Practice coding daily

Build sample projects

Revise OOPs and exception handling

Study frequently used Java libraries

[codingbrushup]

5 Reasons to Start Java Programming with Coding Brushup Today

In the ever-evolving tech landscape, one Java programming language has consistently remained at the forefront: Java. Known for its portability, performance, and wide adoption across industries, Java is a must-have skill for anyone aspiring to become a successful developer.

If you’re considering learning Java, there’s no better place to begin than Coding Brushup. This platform is quickly gaining traction among new and experienced programmers alike for its hands-on, mentor-guided, and career-oriented training programs.

Below, we explore five compelling reasons why you should start Java programming with Coding Brushup today — and how it can unlock doors to exciting opportunities in software development.

1. Industry-Aligned Java Curriculum

One of the top reasons learners prefer Coding Brushup is its industry-aligned Java curriculum. Whether you’re starting from scratch or brushing up on your existing skills, the course is tailored to match current market demands.

The syllabus covers:

● Java syntax and data types

● Object-Oriented Programming (OOP)

● Exception handling and file I/O

● Collections, multithreading, and concurrency

● Java for web and backend development (Servlets, JSP, Spring Boot)

Unlike theoretical-heavy programs, Coding Brushup for Java developers includes real-time applications and practical examples to reinforce concepts. You’ll code, debug, and deploy actual Java-based solutions — something employers look for in candidates.

Why this matters: Java is the backbone of countless enterprise applications, Android apps, and backend systems. Learning it the right way is critical to becoming a reliable developer.

2. Hands-On Learning with Real Projects

Coding Brushup emphasizes project-based learning, which is essential for mastering Java. By working on live coding assignments and capstone projects, you learn how to:

● Build Java-based inventory or billing systems

● Create full-stack web applications using Spring Boot and MySQL

● Design REST APIs in Java

● Develop console-based games or utilities

These projects simulate real-world environments and teach critical software engineering practices such as version control, testing, and documentation.

Why this matters: Employers want Java developers who can hit the ground running. By the end of the course, you’ll have a solid portfolio that demonstrates your Java programming proficiency.

3. Mentor Support and Career Guidance

Learning to code is much easier when you have expert guidance — and Coding Brushup delivers on that front. With 1-on-1 mentorship, learners receive:

● Personalized feedback on code

● Career advice tailored to Java roles

● Mock interviews with Java developer-specific questions

● Resume and GitHub profile optimization

The platform fosters a learning community where students can collaborate, ask questions, and receive peer feedback. The goal isn’t just to teach Java but to prepare you for the Java developer job market.

Why this matters: The Java job market is competitive. Having guidance from industry mentors can make all the difference in landing your first role.

4. Certification That Boosts Your Resume

Upon completion of the Java course, Coding Brushup awards a Java Programming Certification. While skills matter most, certification provides validation of your expertise, especially if you’re a fresher or switching careers.

More importantly, the platform offers career prep services, including:

● Interview readiness programs

● Java coding challenges and assessments

● Direct job referrals and placement assistance

This makes Coding Brushup an excellent launchpad not just for learning Java — but for becoming a certified, job-ready Java developer.

Why this matters: Certification plus real-world experience makes your profile stand out to recruiters.

5. Future-Proof Skills and Versatility

Java is far from being an outdated language. In fact, it powers:

● 90% of Fortune 500 companies’ backend systems

● Millions of Android apps

● Big data platforms like Hadoop

● Cloud and enterprise solutions with Spring and Spring Boot

Learning Java programming equips you with the skills to work across domains — web development, mobile, enterprise, and even finance and health tech sectors.

Moreover, with frameworks like Spring Boot and Hibernate, Java continues to adapt to modern development practices, making it highly relevant in today’s tech stack.

Why this matters: Java’s versatility makes it a great long-term investment in your development career.

Final Thoughts: Why Start Java with Coding Brushup?

If you’re asking, “Is Java still worth learning in 2025?” The answer is a resounding yes — especially when you learn from a platform like Coding Brushup. Here’s what you get:

● A beginner-friendly yet comprehensive curriculum

● Hands-on Java programming experience

● Personalized mentorship from senior developers

● A certification to validate your skills

● Career support tailored to Java developers

Whether you dream of becoming a full-stack Java developer, contributing to enterprise projects, or building your own applications — Coding Brushup gives you the skills and confidence to get there

Read Original Source- https://codingbrushup.com/java-programming-with-coding-brushup-today/

[sruthypm]

Techmindz – The Best Java Training Institute in Kochi for Career-Ready Developers

Looking to launch your career in software development? Java is one of the most powerful and in-demand programming languages out there—and learning it the right way can open doors to endless job opportunities. If you're searching for the best Java training institute in Kochi, look no further than Techmindz.

With a focus on practical learning, expert mentorship, and job-ready training, Techmindz has become the go-to destination for aspiring Java developers in Kerala’s growing IT hub.

Why Java Still Leads in the Programming World

Java has remained a dominant language in the tech world for decades. Here’s why:

Platform Independent – Code once, run anywhere with the Java Virtual Machine (JVM).

Object-Oriented – Promotes clean, modular, and reusable code.

Used Everywhere – From enterprise-level backend systems to Android apps.

High Demand – Java developers are needed in software companies, startups, fintech, telecom, and more.

Excellent Community Support – Thousands of libraries, frameworks, and developer communities worldwide.

Whether you’re a student, graduate, or professional making a career switch, Java is a smart and future-proof choice.

Why Techmindz is the Best Java Training Institute in Kochi

Kochi, home to Infopark and a fast-growing IT ecosystem, has no shortage of training centers. But Techmindz stands out because of its industry-focused, practical, and result-driven training approach.

1. Structured, Career-Oriented Java Curriculum

Our Java course is designed to take you from beginner to professional, step-by-step. You’ll learn:

Core Java (Syntax, Data Types, Loops, OOPs)

Exception Handling & File I/O

Collections Framework

Multithreading & Memory Management

JDBC (Java Database Connectivity)

Web Development with Servlets & JSP

Spring Boot & RESTful API basics

Introduction to real-world frameworks like Hibernate

Each module is crafted to prepare you for real-time development projects and interviews.

2. Experienced Trainers from the Industry

Our instructors aren’t just teachers—they’re active software developers and architects with years of real-world Java experience. They guide you through the course with practical examples, mentorship, and code reviews to make sure you not only learn Java, but understand how to apply it.

3. Live Projects & Practical Sessions

Theory alone won’t get you hired. At Techmindz, students work on live projects and assignments throughout the course. You’ll develop real-world Java applications—such as booking systems, management tools, or mini e-commerce sites—so you build a portfolio you can confidently show to recruiters.

4. Placement Assistance & Career Support

One of the biggest reasons why Techmindz is the best Java training institute in Kochi is our end-to-end placement support. We offer:

Interview preparation (technical + HR)

Resume building & GitHub portfolio setup

Job referrals & placement drives

Soft skills and communication training

We have strong links with IT companies in Infopark Kochi and beyond, giving you a competitive edge in the job market.

5. Flexible Batches & Learning Modes

Whether you’re a college student or a working professional, Techmindz offers weekday, weekend, and fast-track batches, both online and offline. Our flexible schedule ensures that you can learn without compromising your personal or professional commitments.

Who Can Join Our Java Course?

This course is ideal for:

BTech / BCA / MCA / BSc IT students

Recent graduates looking for a career in IT

Manual testers or IT support professionals switching to development

Beginners with no prior coding experience

Career Paths After Java Training

Once you complete our course, you’ll be ready for job roles such as:

Java Developer

Software Engineer

Backend Developer

Android Developer (with additional tools)

Full Stack Developer (with frontend training)

Java is everywhere—from startups to enterprise companies—making it one of the most employable skill sets today.

Final Thoughts

If you’re serious about building a career in software development, your journey starts with the right training. Techmindz offers not just a Java course—but a complete launchpad for your tech career. Our combination of expert trainers, hands-on learning, and career support is why we’re recognized as the best Java training institute in Kochi.

Get started today. Learn Java the right way with Techmindz—and build a future that codes success.

https://www.techmindz.com/java-programming-course-kochi-infopark/

[akshu2460]

Why Java Training Is Essential for Your Career in 2025

Java has remained one of the most popular programming languages worldwide for decades. With its versatility, scalability, and robust frameworks, Java continues to dominate the software development industry. If you’re considering a career in tech, enrolling in professional Java training is a smart choice to boost your skill set and employability.

Benefits of Enrolling in Professional Java Training Programs

Gain Industry-Relevant Skills in Java Programming

Java training equips learners with hands-on experience in developing applications. Professional courses provide a structured approach to understanding core Java concepts like object-oriented programming, data structures, and multithreading. These skills are crucial for excelling in tech roles.

Keep Up With the Latest Java Frameworks

The field of Java development evolves rapidly, with new frameworks and updates emerging regularly. Enrolling in Java training ensures you stay updated on essential frameworks like Spring Boot, Hibernate, and Apache Struts. Mastering these tools enhances your efficiency in real-world projects.

Enhance Problem-Solving Skills Through Java

Java training helps you learn how to break down complex problems and solve them systematically. The language’s simplicity and logical structure are ideal for developing these skills. Gaining expertise in Java helps you tackle technical challenges with confidence.

Key Features of a High-Quality Java Training Program

Comprehensive Curriculum Covering Core Java Concepts

The best Java training courses offer an in-depth curriculum. From basic syntax and loops to advanced topics like Java APIs, every concept is taught with real-world examples. This approach ensures a thorough understanding of the language.

Hands-On Learning with Real Projects

Practical experience is a must for mastering Java. High-quality training programs provide opportunities to work on live projects, including building web applications and RESTful APIs. These projects simulate industry scenarios, enhancing your problem-solving and coding skills.

Guidance from Experienced Java Developers

Learning under the guidance of industry experts provides invaluable insights. Experienced instructors share practical tips, debugging techniques, and best practices that elevate your programming skills to a professional level.

Career Opportunities After Completing Java Training

Become a Java Software Developer

Java developers are always in demand, thanks to the language’s widespread use. After completing professional Java training, you’ll be equipped to build enterprise-level applications, Android apps, and more.

Explore Roles in Web and Mobile App Development

Java is a cornerstone of web and mobile app development. With Java training, you can pursue roles like backend developer, full-stack developer, or Android developer. These positions offer competitive salaries and growth opportunities.

Open Doors to Emerging Technologies

Java is widely used in fields like artificial intelligence, cloud computing, and the Internet of Things (IoT). Advanced Java training prepares you to work on cutting-edge technologies and future-proof your career.

How to Choose the Right Java Training Program

Look for Certified Training Providers

Ensure the course is offered by a reputable training provider. Certifications from accredited institutions add credibility to your skill set and boost your resume.

Check the Course Content and Duration

Opt for a training program with a comprehensive syllabus and flexible schedule. The curriculum should cover both beginner and advanced Java topics to cater to learners at all levels.

Evaluate Reviews and Success Stories

Read reviews and testimonials from past students to gauge the program’s effectiveness. Success stories from alumni indicate the course’s quality and relevance in the job market.

The Future of Java in the Technology Landscape

Java continues to adapt to the ever-changing tech industry, maintaining its relevance. With consistent updates and a thriving community, Java is set to play a pivotal role in software development for years to come. By enrolling in Java training, you position yourself at the forefront of this dynamic industry.

Conclusion: Invest in Java Training for a Promising Career

In today’s competitive job market, having strong programming skills is essential. Java training not only enhances your technical expertise but also opens doors to diverse career paths in software development. Whether you’re a beginner or an experienced professional, mastering Java is a step towards long-term success in the tech industry.

[codeonedigest]

Spring Boot Multithreading using Async in Hindi | Complete Tutorial of Multithreading in Spring Boot in HINDI

Full Video Link: https://youtu.be/SSwhctye9jA Hi, a new #video on #springboot #multithreading using #async #annotation is published on #codeonedigest #youtube channel. The complete tutorial guide of multithreading in #spring #boot #project using async

Multithreading in spring boot is achieved using Async annotation and using Task Executor Service class. Multithreading in spring boot is similar to multitasking, except that it allows numerous threads to run concurrently rather than processes. A thread in Java is a sequence of programmed instructions that are managed by the operating system’s scheduler. Threads can be utilized in the background…

[jobbacking]

Core Java Competitive tests

A Java Developer is responsible for the design, development, and management of Java-based applications. Because Java is used so widely, particularly by large organizations, the daily roles vary widely but can include owning a particular application or working on several at one time. In our current project, we are exploring core java concepts end to end along with programmatic explanations.

We explained about important concepts such as OOPs, Data types, Variables, Constants, Constructors, Interfaces, Packages, Exceptional handling, Applets, Streams, Serialization, Multithreading, Collection Frameworks, Network Programming, Design Patterns, String handling and JVM.

Data Abstraction

In real-world we have three levels of abstractions. They are physical level abstraction, conceptual/logical level abstraction and view level abstraction.

Physical level abstraction is one; it always deals with physical     organization architecture of the application. For example, in real-world     and application designing of any problem comes under physical level     abstraction.

Conceptual/logical     level abstraction is one it always deals with what kind of data we are     entering without dealing with the physical architecture of the     application. For example,  entering the data into the database,     writing the coding and applying testing principle comes under conceptual     level abstraction.

View level abstraction deals with what kind of data we are     retrieving without dealing with both conceptual level abstraction and     physical level abstraction. For example, retrieving the data from the     database in various combinations. All internet users come under view level     abstraction.

MultiThreading

The languages like C, C++ comes under single-threaded modelling languages, since there exist a single flow of controls whereas the languages like JAVA, DOT NET are treated as multi-threaded modelling languages since there is a possibility of creating multiple flows of controls.

When we write any JAVA program there exist two threads they are foreground thread and background thread.

Foreground threads are those which are executing user-defined sub-programs whereas background threads are those which are monitoring the status of foreground thread. There is a possibility of creating ‘n’ number of foreground threads and always there exist single background thread.

Multithreading is the specialized form of multitasking of the operating system.

In information technology, we can develop two types of applications. They are process-based applications and thread-based applications.

For more details please visit Core Java competitive tests our website

SkillPractical provides the best Java tests and interview questions for Java from beginner to expert. It covers all the topics from Core Java to Advanced Java and Spring Boot. Some of the important tests they cover are: 

Tests:    1. Java Core - Programming Test  2. Java Advanced - JDBC Test  3. Java Core - Multithreading Test  4. Java Core - Collections Test  5. Spring REST Test  6. SpringBoot Test 

SkillPractical also has the learning path that helps the user to learn the Java from scratch. If user have any questions on Java, he can post a question in SkillPractical community. They will get an answer from our expert consultants.