#singleton design pattern

[horsescary]

oop brainrot is real

[chariebelssss]

WEEK 4: A Week of Software Design and System Implementation

090524

Last September 5, 2024 was a tornado of software design concepts. From exploring the fundamentals to diving into specific patterns and system implementation, we've covered a lot of ground. We explored the different levels of software design, from architectural design to detailed design. Understanding these levels helps us break down complex systems into manageable components. We discussed various design patterns, such as Singleton, Factory, and Observer. These patterns provide reusable solutions to common design problems, helping us write more efficient and maintainable code.

Engr. Carl's scenario was a real test of our problem-solving skills. We had to suggest a suitable patterns to handle reservations, scheduling, and customer notifications, and to develop a design of the system. It was a challenging task considering the lack of power, but it also forced us to think creatively and come up with innovative solutions.

Working together on the scenario was a great opportunity to learn from each other and collaborate effectively.

#CPE #SDE

[aistechnolabs18]

Hire Unity Game Developer – Mobile, PC & VR Projects

Introduction

Before you hire a Unity developer, , it is important to understand what makes Unity create unity for the development of multiple platforms. utility of Unity - From Mobile to VR - its wide asset shop, and strong social support has made it an equal alternative for indie creators and global studios. Whether you are making a mobile puzzle, a PC RPG or a full Ive -consuming VR experience, Unity provides a harmonious ecosystem that reduces the time -which kills and reduces developmental barriers.

Why Choose Unity for Game Development?

Cross‑Platform Capabilities

When it comes to crossing the transverse platform Purinogen, the unit shines. With a single code base, developers can target the VR platforms such as iOS, Android, Windows, MacOS, Linux and even Oculus, Vive and Playstation. This flexibility means low growth costs and a wide access to your game. Don't miss the opportunity to hire unity game developers, who know how to effectively benefit the Build Pipelines of Unity for each platform.

Strong Community & Asset Store

A lively ecosystem surrounds the unity. Asset store thousands prepared by the team plugins, 3D models, VFX, shades and tools that speed up the development. Active platforms and training library developers help developers with fast troubleshooting, learning best practice and sharing knowledge - it is easy to score customized projects. When you hire Unity 3D developers, make sure they are well prepared to tap in the asset store while avoiding BLOT and Licenses loss.

Suitable for 2D, 3D, and VR Development

Unity isn’t just for blocky 3D games—the engine includes optimized tools for 2D game creation like tilemaps, animation editors, and lightweight render pipelines. Additionally, its integration with VR SDKs and XR plugins has positioned it well within the XR market. Whether it is a short mobile custom pixel art or a full blown Simulation, you can retain a unit developer that will distribute in any format.

Key Skills to Look for When You Hire a Unity Developer

Proficiency in C# and Unity Editor

C# is the backbone of Unity scripting. Developers must write clean, efficient code for gameplay design, UI systems, data management, and editor tooling. Look for candidates who follow SOLID principles, use Design Patterns like Singleton and Observer, and can build custom editor extensions.

Experience with Mobile, PC, and VR Deployment

Challenges from platforms vary greatly: Mobile optimization (battery, memory), PC (entrance option, graphic fidelity) and VR (high frame rate, delay delay). When you hire Unity developers, make sure they have sent at least one app or game on each target platform and understood the platform. Understand the best practice.

Familiarity with Physics, Animations & Game Optimization

Realistic physics, uninterrupted character animation and continuous performance are not -hypothetical. Ideal developers must experience the engine of physics - with unity, in methods such as Mecanim animation, timeline and object pooling, batching and memory profile. When you hire unity program talent, you prioritize those who can perform previous work on gaming and technical Polish.

Where to Find Unity Game Developers for Hire

Freelance Platforms

Sites like Upwork, Freelancer and Topler provide flexible access to Unity Talent worldwide. You can place a unit developer per hour or based on the project, usually weeting them through portfolio and test assignments. This route allows fast turnaround operations and agility - especially for small or more experimental projects.

Game Development Agencies

Boutique game studios and agencies provide end‑to‑end services, from design to deployment. They often bring defined processes—QA, art pipelines, release management—helping maintain high standards. If you’re serious about polishing a commercial product, agencies can be the right path when you hire unity game developers with proven track records.

Hiring Remote Developers or Outsourcing

External employment costs Access to flexibility and global talent pool. Many people choose to hire unit game developers from India, where competitive prices meet high technical capacity and a mature freeling ecosystem. Just provide good communication, overlap time areas, and clarify the project milk to maximize the success.

Hiring Options – Freelancer vs. Agency vs. In‑House

Pros and Cons of Each Model

Model

Pros

Cons

Freelancer

Cost-effective, flexible, quick onboarding

Variable quality, limited capacities, less oversight

Agency

Full service, expert teams, structured QA

Higher cost, less flexibility, contractual minimums

In‑House

Deep commitment, team alignment, IP control

High upfront investment, HR overhead, slower scaling

Choose wisely based on project scope. If you just hire Unity programmer for one feature, freelancing might do. For larger scope, agencies or in‑house teams bring stability.

When to Hire Unity Programmer vs. Full Team

Unity programmer: Ideal for a specific prototype, tool, or feature. Less cost, faster onboarding.

Full team: For complete game development, requiring artists, QA, UI/UX, audio, and backend expertise. When you hire unity 3d developers, find groupers that complement your core skill set and accept iteration cycles.

Cost to Hire Unity Game Developers in 2025

Cost by Region (US, India, Europe)

United States: Cost of senior unit devas $ 80- $ 150/h; Mid-level $ 50- $ 80/h.

Europe (Western): €40–€100/hr for senior talent. India: $ 15- $ 40/h for experienced developers; Junior prices from $ 10/h. Many start -ups hire unity game developers from India for cost certificates without a quality agreement.

Cost by Experience Level

Junior (0–2 years): $15–$40/hr globally; good for simple 2D or mobile tasks.

Mid-level (2–5 years): $40–$80/hr; can manage full gameplay systems.

Senior (5+ years): $80–$150+/hr; architecting performance-focused, cross-platform, multiplayer or VR games.

Budgeting Tips for Indie vs. Studio Projects

Define a minimal feature set (MVP) and start small.

Use asset-store assets where safe to reduce custom work.

Modular contracting—hire one Unity programmer for early stages.

Milestone‑based payments tied to deliverables (e.g. movable character, build pipeline).

Questions to Ask Before You Hire Unity Game Developers

Portfolio

Ask to see live builds or playable demos on all relevant platforms.

Check for consistent frame rate, responsive controls, and polished visuals.

Look for experience with mechanics similar to your own.

Tech Stack

Do they use scriptable objects for data management?

Familiarity with render pipelines (URP/HDRP) and XR Interaction Toolkit?

Use of version control (Git or Plastic SCM)?

Post‑launch Support

Do they provide maintenance, bug fixes, or updates after launch?

Have they worked with analytics SDKs (e.g. Firebase, Unity Analytics)?

Communication & Time Zone

Are they comfortable working within your timezone?

Do they have reliable communication channels—Slack, Zoom, etc.?

Are language and cultural differences manageable when needed?

When you hire Unity 3D developers, asking these questions upfront helps avoid misalignment.

Final Thoughts

Unity  offers a powerful and flexible development environment for mobile, PC and VR projects, making it a top option for developers around the world. You want to hire unit game developers, bring in a dedicated unit programmer or create an entire team, it is necessary to coordinate the model's employment with the project goals and budget. Many start -ups and India start -ups choose from India to reduce costs without compromising on quality, often collaborating with reliable suppliers such as AIS Technolabs. Before you hire Unity 3D developers, be sure to review the portfolio, confirm the perfection experience across platforms and install clear expectations of support after launch. With the strategy of keeping the right task, your game can be a polished, high-performing experience on mobile, desktop and VR platforms-this is the right time to hire a Unity developer that can give your vision to life. Know more>>https://medium.com/@ridh57837/hire-unity-game-developer-mobile-pc-vr-projects-2ccdca920aa7

[promptlyspeedyandroid]

Java Interview Questions and Answers: Your Ultimate Preparation Guide

That’s why we’ve created "Java Interview Questions and Answers: Your Ultimate Preparation Guide" to help you get fully prepared and stand out from the competition.

Java remains one of the most widely used programming languages across the tech industry. From building enterprise-grade applications to Android development and cloud-based systems, Java is a powerful, object-oriented language that has stood the test of time. As a result, Java continues to be a core requirement in thousands of job listings globally, and technical interviews often focus heavily on Java fundamentals, coding practices, and real-world problem-solving.

This guide offers a comprehensive breakdown of the most commonly asked Java interview questions, along with expert-level answers that explain not just the what, but the why—helping you build a strong conceptual foundation.

Why This Guide Matters

"Java Interview Questions and Answers: Your Ultimate Preparation Guide" is designed to equip you with the most relevant, up-to-date, and frequently asked questions across various job roles and experience levels. Whether you're a fresher just entering the field or a seasoned Java developer with years of experience, the questions included in this guide cover all the core areas expected in a Java interview.

With structured answers, real-world examples, and technical explanations, this guide helps you understand each topic in depth—so you’re not just memorizing, but truly learning.

Key Topics Covered in This Guide

Here are the primary categories of Java interview questions and answers covered in this ultimate preparation guide:

1. Core Java Basics

These questions test your fundamental knowledge of Java, including syntax, control structures, and data types. Examples include:

What are the main features of Java?

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

Explain the concept of platform independence in Java.

2. Object-Oriented Programming (OOP) in Java

As Java is built around the OOP paradigm, interviewers often assess your grasp of these principles:

What is encapsulation, and why is it important?

Explain inheritance with examples.

What is polymorphism, and how is it implemented in Java?

3. Exception Handling

Proper exception handling is critical in robust Java applications. Common questions include:

What is the difference between checked and unchecked exceptions?

How do try, catch, finally, and throw work together?

What is the purpose of custom exceptions?

4. Collections Framework

This is a favorite topic in Java interviews due to its practical importance:

What is the difference between ArrayList and LinkedList?

How does HashMap work internally?

What are the differences between Set, List, and Map?

5. Multithreading and Concurrency

Java supports concurrent programming, and questions in this category test your knowledge of threading concepts:

What is a thread in Java?

Explain the differences between Runnable and Thread.

How do you avoid thread-safety issues in Java applications?

6. Java 8 and Beyond

Modern Java versions introduced features like lambdas, streams, and functional programming:

What are lambda expressions?

How do you use the Stream API in Java 8?

What is the difference between Optional and null?

7. JVM Internals and Memory Management

Senior-level candidates are often expected to understand how Java works under the hood:

How does garbage collection work in Java?

What are the different memory areas in JVM?

How can memory leaks be detected and avoided?

8. Design Patterns and Best Practices

To demonstrate architectural thinking, candidates may be asked:

What is the Singleton pattern and how do you implement it?

Explain the Factory and Observer patterns.

What are SOLID principles in Java programming?

Sample Questions from the Guide

Here are a few samples from "Java Interview Questions and Answers: Your Ultimate Preparation Guide":

1: What is the difference between ‘==’ and .equals() in Java? Ans: == checks reference equality, meaning whether two references point to the same object. .equals() checks logical equality, meaning whether two objects have the same value. For example, two different String objects with the same value will return true using .equals() but false using ==.

2: What is a HashMap, and how does it work internally? Ans: A HashMap stores key-value pairs. It uses a hash function to compute an index where the value should be stored in an array. If multiple keys hash to the same index, Java handles collisions using a linked list or a balanced tree (as of Java 8).

3: How does Java achieve platform independence? Ans: Java code is compiled into bytecode by the Java compiler. This bytecode is platform-independent and can be executed by the Java Virtual Machine (JVM), which is available on multiple operating systems.

How to Use This Guide for Effective Interview Prep

To get the most out of "Java Interview Questions and Answers: Your Ultimate Preparation Guide", follow these steps:

Study the concepts – Don’t just read the answers; understand the reasoning behind them.

Practice coding – Use platforms like HackerRank, LeetCode, or Codeforces to apply Java in real coding problems.

Mock interviews – Simulate real interview scenarios with peers or mentors to practice verbalizing your thoughts.

Build small projects – Implement real-world solutions to solidify your understanding of Java concepts.

Keep learning – Stay up-to-date with Java updates and community discussions to stay ahead of the curve.

Conclusion

Preparation is key to succeeding in a Java interview, and "Java Interview Questions and Answers: Your Ultimate Preparation Guide" is your all-in-one resource for that journey. By mastering the topics covered in this guide, you'll gain the confidence and knowledge needed to impress your interviewers and secure your desired role in the tech industry.

[thedailyhealthblog]

Using Growth Calculators for Twins or Multiples: What You Need to Know

Welcoming twins or multiples into your life is a joyous and transformative experience. As a parent, you naturally want to ensure your little ones are growing and developing healthily.

But when it comes to tracking their growth, you may find yourself facing a few more questions than parents of singletons. This is where baby growth calculators can be particularly helpful. Designed to provide a snapshot of developmental progress, these tools can support your understanding of whether your babies are on a healthy trajectory.

Let’s look at how growth calculators work for twins or multiples and what you must remember as you use them.

Understanding Baby Growth Calculators

A baby growth calculator is a digital tool designed to estimate and track key indicators of a baby’s physical development — typically weight, length or height, and head circumference. These tools usually require basic inputs such as age, gender, and current measurements. Based on this information, they provide percentile ranges that help parents understand how their baby compares to typical growth patterns for that age.

With twins or multiples, it’s essential to remember that growth comparisons shouldn’t be made between the siblings. While they may have shared the same womb, their postnatal growth patterns can vary greatly. Growth calculators can help you observe each baby’s progress individually rather than comparatively, which is vital for ensuring you respond to each child's unique needs.

Growth Patterns in Twins or Multiples

It is common for twins or multiples to be born smaller than singletons. This is primarily because they share the same space and nutritional resources in the womb. As such, their early growth trajectories may differ. For example, many twins experience "catch-up" growth during the first few months or years of life.

This variation makes it even more important to track growth using individualised tools. A baby growth calculator can help you interpret your child's progress against standard development expectations while still appreciating that each child may follow a slightly different pace.

What Baby Growth Calculators Do (and Don’t Do)

Baby growth calculators provide a general view, not a definitive medical diagnosis. They offer an estimated percentile, which shows where your child’s measurements fall compared to typical ranges.

However, these tools do not replace personal observations or professional advice. Babies grow at different rates, and many factors influence this process, such as genetics, feeding habits, sleep quality, and overall well-being. With multiples, one baby may temporarily surge ahead in growth while another progresses more gradually. This isn’t necessarily a cause for concern—it's simply a variation of normal development.

Things to Keep in Mind When Using Growth Calculators for Multiples

Track Each Child Separately

It’s important to use the growth calculator individually for each baby. Record their age, weight, height, and other relevant measurements independently. This will give you a clearer understanding of how each progresses based on their unique journey.

Focus on Trends, Not Single Readings

Growth is a dynamic process. A single data point does not offer a complete picture. Look for patterns over time to assess whether your babies are growing steadily. Growth calculators often allow you to save or review past data, which helps you spot consistent trends or identify sudden changes.

Consider the Birth Context

Babies born as multiples often arrive earlier than full-term singletons. Some baby growth calculators allow for adjustment based on corrected age (actual age minus the number of weeks born early). While this is a helpful option for more accurate readings, it's unavailable on every calculator.

Interpret Percentiles with Perspective

Percentiles can sometimes create unnecessary concern or overconfidence. A low percentile doesn’t automatically mean there’s an issue, and a high one doesn’t always mean better health. The overall development matters, including motor skills, responsiveness, and general well-being.

Supporting Healthy Growth in Twins or Multiples

Alongside monitoring growth numerically, nurturing a healthy environment plays a crucial role. Integrating organic baby products into daily routines can offer added reassurance for parents who prefer a more mindful and sustainable approach to childcare.

Organic skincare and haircare products, formulated without synthetic additives, may be gentler for babies, especially those with sensitive skin. Regular massage using natural products can promote circulation and relaxation, aiding physical and emotional development.

For feeding, using organic feeding products can offer peace of mind, knowing that your babies aren’t being exposed to unnecessary synthetic materials.

Final Thoughts

Using a baby growth calculator for twins or multiples can be a helpful way to stay informed and attentive to each child’s unique development. However, it’s essential to use these tools with understanding and flexibility. Each child, even in a set of twins or triplets, will grow and change at their own pace.

By combining digital tracking with attentive caregiving and choosing organic clothing, skincare, feeding products, and soft toys where possible, you can create a nurturing space for each baby to thrive. Growth is measured in centimetres or kilograms and in smiles, movement, curiosity, and connection.

[differentbouquettree]

Festive Collection 2025: Trending Jewellery You must have This Season

The event may be getting dressed up for , or a family wedding, as the right jewellery can instantly transform you. This year, Festive Jewellery Collection 2025 is discussing bold glamour, timeless charm, and a stunning blend of tradition and trend. We at Kallos have specially curated an edit to make your festive wear memorable. Have a look at what's trending and what you just have to get your hands on.

1. Statement Black Metal Jhumkas: Classic Meets Statement

Black metal jhumkas are a necessity for the 2025 festival season. Rustic in feeling and statement in appearance, they are perfect to pair with classic sarees as well as contemporary Indo-western wear. Lightweight yet striking

Used in complex designs

Versatile for day-night festive fashion

Style Tip: Style black metal jhumkas with a black kurti and oxidised bangles for an enduring yet rugged look.

2. Oxidised Earrings: Timeless Festive Classic

Oxidised earrings are never out of style when it comes to ethnic jewellery fashion. Whether it is large chandbalis or minimalist danglers, oxidised pairs are ideal for women who like classic elegance.

Ideal with mirror work, bandhani, and lehengas

Affordable but high-end-appearance

A must-have for every festival jewellery box

Kallos Hot Pick: Our oxidised peacock pattern earrings ��� perfect for Garba nights or a mehendi ceremony.

3. Multi-layer Neckpieces & Chokers: Glam Up in an Instant

Kallos's new festive jewelry collection for 2025 includes multi-layered oxidised necklaces, tribal-print chokers, and antique silver tones. These pieces magic with low-cut necklines and monochromatic outfits. Perfect for weddings and puja functions

Perfect for light make-up looks

Coming in mix-metal and matte finishes

Pro Tip: Go for a chunky neckpiece and keep the rest of the look dressed down so your jewellery gets the spotlight.

4. Rings & Bangles: The Little Details That Make the Difference

No party fashion is complete without show-stopping accessories. Statement rings, stackable bangles, and oxidised cuffs are reigning supreme this season. Adjustable rings in floral or mandala patterns

Stackable bangles that can be styled as a singleton or stacked

Stunning add-ons for gifting, too.

5. Why Kallos is Your One-Stop Shop for Celebration Jewellery 2025

Kallos offers you a handpicked assortment of celebration jewelry that merges quality, affordability, and fashion. Our jewelry designs are created with Indian celebrations in mind—vibrant, elegant, and cultural.

100% skin-friendly, best quality materials

Free shipping & convenient return

Fresh designs updated seasonally

Final Thoughts

The Festive Collection 2025 is not just about jewelry; it's about celebrating your individuality. If you love classic jhumkas or are drawn to the edginess of black metal accessories, there's something for everyone in this year's collection.

[fromdevcom]

With increasing pace of tough competition at any level, time has become an invaluable commodity when it comes to the Java development. The issues become more crucial when it comes to finding the right Java developer for any particular software. The right person should have extensive knowledge as well as programming skills for the success of the project. Now, with the advent of this service, the task of shortlisting the appropriate techies have become easier and simpler. What Is Tests For Geeks Tests For Geeks is a services which provides an array of programming online tests that covers various programming languages as well as platforms such as Java. Each programming test is devoted to a particular language or platform and is developed by professionals who have comprehensive skillsets, knowledge and experience. It is a fact that the hiring manager or team lead can save a lot of time and effort by testing the knowledge of the potential candidates before shortlisting and conducting the face-to-face interview. Although it should be noted that this test it is not an alternative for live interviews, it enables the HR to save their time by weeding out the wrong candidates at the initial stage. With the reach of the internet, the company can also tap talents overseas easily. Before going further, with the interview, the company can also ensure that the overseas candidate is the right choice. How The Test Is Conducted? The design of the test makes taking tests very easy for team lead to manage the hiring process. All the team lead has to do is to choose the required test, such as Java, generate a unique link and send it to the candidate. After the completion of the test by the candidate, the result becomes available in your inbox. If two or more candidates are slated to give this test, and you want to streamline the process, you can create a permanent link on your website and guide the candidates there. All these candidates have to mention their name and email before starting the test. The company can also apply for a permanent URL on their website so that potential candidates can give the test without HR or team lead participation. They need to intimate their name and email before testing their knowledge and skills in the online test. Details of Java test The Java programming test contains the following topics inside Operators in Java language Collections and Data Structures Reference Types and Value Types Autoboxing and Unboxing OOP (Object Oriented Programming) Patterns: Singleton Exceptions, Threads and Synchronization JPA and Hibernate For Team Leads, HR Managers It is a fact that time is an invaluable commodity for people working in any organization, regardless of the size. With a large number of applications, it is very difficult for any person to interview each candidate only to be disappointed. Also, the time that is wasted can be channeled into other productive work. With this service, the HR person can check the results and discard applicants who are unable to fare well in Java coding when compared to others. Although this testing is not the best substitute for a live interview, it saves precious time by avoiding meetings with unsuitable candidates. Personalization And Branding You can personalize the services of this website by using the company domain and logo while you are in process of hiring the suitable Java candidates. The company offers an unlimited plan with which you can convince the potential candidate that it is an in-house screening service of your company. For Java Developers For the programmers who are looking for a good position at any leading IT company, taking a test at Tests for Geeks is the best move. As the tests at this website are formulated by Java experts who have extensive experience in the industry, the tests represent a valuable benchmark. A test report from this website attached with the candidate’s resume will be a great value addition. This is because the report will demonstrate the software skills, knowledge and expertise of the developer.

[codingbrushup]

9 Key Benefits of the Java Best Practice Course on Coding Brushup

In today’s fast-paced software development world, writing code that just works isn't enough. Developers must write clean, scalable, and maintainable code to keep up with modern project demands. Whether you’re an aspiring full stack developer or an experienced backend engineer, mastering best practices in Java is a must. That’s exactly why the Java Best Practice Course on Coding Brushup is a game-changer.

Coding Brushup is a smart learning platform that delivers powerful, real-world programming content to help developers code more effectively. Its Java best practice course is specifically designed to take your Java programming course practice beyond syntax, teaching you how to write production-ready code like a professional.

Let’s dive into the 9 key benefits of this course and see how Coding Brushup can take your Java skills to the next level.

Master Clean Code Principles in Java

The first and most important benefit of the Java best practice course on Coding Brushup is its focus on writing clean code. You’ll learn the principles of writing readable, efficient, and modular Java code, which is vital for any long-term project success.

Clean code isn’t just about style; it’s about reducing bugs, improving maintainability, and making collaboration easier. Whether you're working solo or as part of a development team, Coding Brushup ensures your Java code meets industry standards.

Deep Dive into Object-Oriented Programming (OOP)

The Java programming course practice on Coding Brushup gives you a solid grasp of core object-oriented programming concepts—encapsulation, inheritance, polymorphism, and abstraction.

The course goes beyond definitions. You’ll work through practical Java examples that show how these principles are applied in real-world applications. This foundation is essential for building scalable software systems and is highly valued in full stack developer roles.

Learn Design Patterns the Right Way

One of the standout features of the Java course on Coding Brushup is the dedicated module on design patterns. Design patterns are time-tested solutions to common software problems, and knowing when and how to apply them is a hallmark of advanced developers.

From Singleton and Factory to Observer and Strategy, the Java best practice course teaches you when to use each pattern, with practical coding exercises and detailed explanations.

Emphasizes Error Handling and Debugging

Too often, developers overlook robust error handling until a bug appears in production. Coding Brushup teaches you how to handle exceptions in Java properly, log errors, and implement defensive programming strategies.

The course includes common error scenarios, how to debug effectively, and how to write code that fails gracefully—making your applications more resilient and reliable.

Boosts Job-Readiness for Full Stack Developer Roles

Whether you're aiming for your first job or leveling up in your career, the Java best practice course on Coding Brushup helps make you job-ready. Full stack developers are expected to have both frontend and backend skills, but backend logic—especially in Java—must be strong.

With Coding Brushup for Java, you’ll learn backend fundamentals, Java frameworks, and best practices that recruiters look for in a full stack developer. This gives you a competitive edge during interviews and on the job.

Enhances Your Java Programming Course Practice with Real Projects

Theory is only half the equation. The real learning happens when you build and practice. The Java course on Coding Brushup includes hands-on coding challenges and mini-projects to reinforce what you’ve learned.

You'll build applications like a user authentication system, online library manager, and inventory tracker—each aligned with real-world use cases. These projects strengthen your Java programming course practice and give you portfolio-ready work to show employers.

Covers the Latest Java Features (Java 17+)

Staying up to date with the latest Java versions is critical, especially for developers working in enterprise environments. Coding Brushup’s Java best practice course is regularly updated to include new language features, like:

Records

Switch expressions

Sealed classes

Text blocks

Pattern matching

By learning these features early, you keep your skills current and future-proof your career.

Teaches Testing and Test-Driven Development (TDD)

Writing tests is just as important as writing functional code. Coding Brushup includes a full module on unit testing with JUnit and how to implement test-driven development (TDD) in Java.

You’ll learn how to:

Write unit tests

Create mock objects

Set up automated test pipelines

Ensure code quality using coverage tools

These practices are essential for enterprise development and demonstrate a mature, professional coding style.

Gain Lifetime Access and Community Support

When you enroll in the Java best practice course on Coding Brushup, you get lifetime access to content. This means you can revisit lessons, download code snippets, and keep up with new modules at your pace.

More importantly, Coding Brushup offers a thriving community of developers. You can ask questions, share solutions, and collaborate with peers—all of which accelerate your learning journey.

Conclusion: Elevate Your Java Skills with Coding Brushup

If you’re serious about improving your coding standards, building scalable software, and growing as a full stack developer, the Java best practice course on Coding Brushup is the smart choice. It’s structured, practical, and aligned with what the industry demands.

Don’t just learn Java—master it the professional way with Coding Brushup.

Start your journey today at codingbrushup.com and experience the difference clean code, smart design, and real practice can make.

[top10seostrategiestorankyo]

Most useable core Creational Design Patterns in Java(Singleton & Prototype)

Explore how Singleton and Prototype patterns streamline Java applications by enhancing performance, reuse, and maintainability in real-world scenarios.

Design patterns are tried-and-tested solutions to common software design problems.  In Java, they help developers write clean, reusable, and scalable code.  This post focuses on two creational design patterns:  1. Singleton Design Pattern 2. Prototype Design Pattern

1. Singleton Design Pattern: The Singleton pattern ensures a class has only one instance and provides a global point of access to it.

Why Use It: Use Singleton when you want exactly one object to coordinate actions across the system. It’s perfect for things like: Configuration settings Database connections Thread pools  Logging  Caches

Java Implementation (Thread-Safe Singleton): public class ConfigManager {  private static volatile ConfigManager instance;

private ConfigManager() {  // private constructor  }

public static ConfigManager getInstance() {  if (instance == null) {  synchronized (ConfigManager.class) {  if (instance == null) {  instance = new ConfigManager();  }  }  }  return instance;  }

public void printConfig() {  System.out.println(“App config data…”);  } }

Database Connection Manager: import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException;

public class DatabaseConnectionManager {  private static volatile DatabaseConnectionManager instance;  private Connection connection;  private static final String URL = “jdbc:mysql://localhost:3306/app_db”;  private static final String USER = “root”;  private static final String PASSWORD = “password”;

private DatabaseConnectionManager() {  try {  this.connection = DriverManager.getConnection(URL, USER, PASSWORD);  } catch (SQLException e) {  throw new RuntimeException(“Failed to connect to DB”, e);  }  }

public static DatabaseConnectionManager getInstance() {  if (instance == null) {  synchronized (DatabaseConnectionManager.class) {  if (instance == null) {  instance = new DatabaseConnectionManager();  }  }  }  return instance;  }

public Connection getConnection() {  return connection;  } }

public class UserService {  public void getUserData() {  try {  Connection conn = DatabaseConnectionManager.getInstance().getConnection();  // Use the connection for a query (using Statement, PreparedStatement, etc.)  } catch (Exception e) {  e.printStackTrace();  }  } }

2. Prototype Design Pattern: The Prototype pattern lets you clone existing objects instead of creating new ones from scratch. It’s especially useful when object creation is expensive (e.g., loading from DB, complex setup).

Why Use It:  When object construction is costly.  When you need many similar objects with slight variations.  When you want to avoid subclassing   Document Template System: Building an enterprise app that generates business reports (invoices, summaries, charts). Each report starts from a base template, but the content is customized per user or client.

Instead of recreating everything from scratch, we clone a base report object and make changes.

public class ReportTemplate implements Cloneable {  private String title;  private String content;  private String footer;

public ReportTemplate(String title, String content, String footer) {  this.title = title;  this.content = content;  this.footer = footer;  }

public void setContent(String content) {  this.content = content;  }

public void print() {  System.out.println(“=== “ + title + “ ===”);  System.out.println(content);  System.out.println(“ — — “ + footer + “ — -”);  }

@Override  public ReportTemplate clone() {  try {  return (ReportTemplate) super.clone();  } catch (CloneNotSupportedException e) {  throw new RuntimeException(“Failed to clone ReportTemplate”, e);  }  } }

public class Main {  public static void main(String[] args) {  // Base template  ReportTemplate monthlyReport = new ReportTemplate(  “Monthly Report”,  “This is a placeholder content.”,  “Confidential”  );

// Clone for Client A  ReportTemplate clientAReport = monthlyReport.clone();  clientAReport.setContent(“Revenue: $10,000\nProfit: $2,500”);

// Clone for Client B  ReportTemplate clientBReport = monthlyReport.clone();  clientBReport.setContent(“Revenue: $12,000\nProfit: $3,000”);

// Display both  clientAReport.print();  clientBReport.print();  } }

When to Use What: Use Case Singleton Prototype One shared instance needed ✅ ❌ Performance matters in object creation ❌ ✅ Slight variations of the same object ❌ ✅ Global access point required ✅ ❌

Test yourself on what you’ve learned above, and compare your answers with the correct ones provided below.

Q1. What is the main purpose of the Singleton pattern? A. Ensure multiple instances of a class B. Allow cloning of objects C. Ensure only one instance of a class D. Avoid subclassing

Please visit our website to know more:-https://cyberinfomines.com/blog-details/most-useable-core-creational-design-patterns-in-java%28singleton-&-prototype%29

[atplblog]

Price: [price_with_discount] (as of [price_update_date] - Details) [ad_1] Master Java Design Patterns with Confidence! This comprehensive eBook is your ultimate guide to mastering design patterns through an extensive collection of Multiple-Choice Questions (MCQs) designed for real-world success.Whether you're a student prepping for exams, a developer aiming to ace technical interviews, or a professional building scalable applications, this book has you covered. Dive into hundreds of carefully crafted MCQs covering Creational, Structural, and Behavioral patterns—Singleton, Factory, Adapter, Observer, and more. What sets this book apart? Every question comes with a detailed explanation and complete solution, breaking down complex concepts into clear, practical insights. Learn why a pattern works, how to apply it, and how to avoid common pitfalls, all while building expertise that translates directly to real-world coding challenges.Why Choose This Book?Extensive MCQs: Test and sharpen your knowledge with a wide range of questions.Diverse Question Types: Master patterns through concept-based, code-based, and scenario-based MCQs for a well-rounded learning experience.In-Depth Explanations: Gain a deep understanding of each pattern’s purpose and application.Real-World Focus: Learn to solve problems like a pro with patterns used in modern software development.Perfect for All Levels: From beginners to seasoned coders, grow your skills at your own pace.Get ready to code smarter, not harder. Whether you’re chasing certifications, career growth, or cleaner code, Java Design Patterns for Real-World Expertise is your key to unlocking mastery. Grab your copy now and start building solutions that stand out!Add to your book today and take the first step toward Java design pattern excellence! ASIN ‏ : ‎ B0F4Y467PL Language ‏ : ‎ English File size ‏ : ‎ 1.2 MB Text-to-Speech ‏ : ‎ Enabled Screen Reader ‏ : ‎ Supported Enhanced typesetting ‏ : ‎ Enabled X-Ray ‏ : ‎ Not Enabled Word Wise ‏ : ‎ Not Enabled Print length ‏ : ‎ 555 pages [ad_2]

[infostans]

Info Stans: Crafting Seamless iOS Designs for Next-Gen User Experiences

iOS design is the art of creating seamless, intuitive, and visually engaging user experiences tailored for Apple devices. Guided by Apple’s Human Interface Guidelines, iOS design emphasizes clarity, depth, and simplicity. Every element from typography to transitions is meticulously designed to feel native, responsive, and elegant.

[techsoundwave]

Что такое Design Patterns и как они помогают в разработке ПО

Когда мы говорим о разработке ПО, на ум первым делом приходят фреймворки, стек технологий, тесты, архитектура. Но если взглянуть шире, то под капотом любой стабильной системы всегда скрываются более гл��бокие принципы. Например, те же шаблоны проектирования — Design Patterns.

Интересно, что когда я впервые столкнулся с задачей продвижения сайтов, это подтолкнуло меня глубже изучить архитектуру веб-приложений. Скорость загрузки, SEO-оптимизация, кэширование — всё это упирается не только в HTML и мета-теги, но и в то, насколько грамотно выстроен backend. А значит, и в то, как ты используешь паттерны проектирования. Правильная структура кода, разделение ответственности, повторное использование логики — всё это прямо влияет на продвижение сайтов, особенно когда речь о масштабных системах.

Так что же такое Design Patterns?

Проще говоря, это проверенные временем решения типовых задач в разработке. Не куски кода, а скорее — подходы к организации кода. Они помогают избежать «велосипедостроения», делают систему понятной для команды и масштабируемой.

🧠 Вот несколько самых популярных паттернов, которые я регулярно применяю в работе:

🔸 Singleton — ��спользуется, когда нужен один-единственный экземпляр класса (например, для конфигурации или подключения к базе).

🔸 Factory — позволяет создавать объекты без указания точного класса. Отлично подходит, если нужно инкапсулировать логику создания.

🔸 Observer — помогает создать подписку на события. Особенно полезен в UI: компонент подписывается на обновление данных и перерисовывается при изменении.

🔸 Strategy — даёт возможность менять поведение объекта на лету. Очень удобно, если у тебя несколько вариантов обработки данных или бизнес-логики.

🔸 Decorator — позволяет «оборачивать» объекты дополнительной функциональностью, не изменяя их код.

Когда я разрабатываю мобильные приложения в нашем стартапе, паттерны буквально экономят недели. Особенно в MVP-фазе: проще масштабировать, подключать новых разработчиков и тестировать бизнес-гипотезы, когда архитектура понятная и предсказуемая.

Design Patterns — это про зрелость. Не слепое следование моде, а осознанный выбор структуры, которая облегчит жизнь команде и сделает продукт стабильнее. Если хочешь писать не просто работающий, а поддерживаемый и гибкий код — начни с изучения этих шаблонов. И применяй с умом.

[souhaillaghchimdev]

Learning Design Patterns in Programming

Design patterns are reusable solutions to common software design problems. Whether you're a beginner or an experienced developer, learning design patterns can greatly improve your ability to write clean, scalable, and maintainable code. This post introduces the concept of design patterns, why they're important, and how you can start using them effectively in your projects.

What Are Design Patterns?

A design pattern is a proven way to solve a specific problem in software design. These patterns are not code snippets but templates or best practices that guide developers in structuring their programs.

Why Use Design Patterns?

Code Reusability: Promotes the use of reusable solutions.

Scalability: Makes it easier to scale applications.

Maintainability: Leads to cleaner and more organized code.

Team Collaboration: Helps teams follow a shared vocabulary and approach.

Problem Solving: Speeds up decision-making by providing tried-and-tested approaches.

Categories of Design Patterns

Creational Patterns: Focus on object creation mechanisms (e.g., Singleton, Factory).

Structural Patterns: Deal with object composition (e.g., Adapter, Decorator).

Behavioral Patterns: Manage communication and behavior (e.g., Observer, Strategy).

Common Design Patterns Explained

1. Singleton Pattern

Ensures a class has only one instance and provides a global access point to it.// Singleton in Java public class Database { private static Database instance; private Database() {} public static Database getInstance() { if (instance == null) { instance = new Database(); } return instance; } }

2. Factory Pattern

Creates objects without exposing the instantiation logic to the client.// Factory Example in Python class ShapeFactory: def get_shape(self, type): if type == 'circle': return Circle() elif type == 'square': return Square()

3. Observer Pattern

Defines a one-to-many dependency so that when one object changes state, all its dependents are notified.

4. Strategy Pattern

Allows algorithms to be selected at runtime by defining a family of interchangeable behaviors.

5. Decorator Pattern

Adds new functionality to objects dynamically without changing their structure.

Best Practices for Learning Design Patterns

Start with the basics: Singleton, Factory, and Observer.

Understand the problem each pattern solves.

Use real-world examples to grasp each pattern.

Refactor your existing code using design patterns where applicable.

Don't force patterns—use them where they naturally fit.

Resources for Learning

Refactoring Guru – Visual and code-based examples.

SourceMaking – Classic explanations.

Java Design Patterns GitHub Repo

Book: Design Patterns: Elements of Reusable Object-Oriented Software by the "Gang of Four".

Conclusion

Design patterns are a powerful tool for developers at all levels. They provide a structured approach to solving common programming problems and help build applications that are easier to manage and extend. Start small, practice often, and soon you'll be writing better code with confidence.

[ankitcodinghub]

Comp301 - a07-pizza Solved

In this assignment, you’ll use the creational design patterns singleton, multiton, and factory method to control instantiation of some classes. Imagine the process of ordering a pizza at a local pizza shop. What information does a customer need to provide so that they get the pizza they want? 1. What size should the pizza be? 2. What kind of crust should the pizza have? 3. What kind of cheese…

[nursingwriter]

Summary This study examines the behavioral and psychological correlates of gestational weight gain patterns. Recommendations for optimal gestational eight gain are based on the pre-pregnancy or baseline body mass indexes. Weight gain significantly below or above the recommendations for one’s BMI can lead to adverse outcomes including low birth weight, increased risk for caesarean delivery, and even childhood obesity. Based on prior literature showing that a multitude of variables may impact gestational weight gain, this study illustrates some of the psychological variables that may be implicated. The authors use a biopsychosocial model, which takes multiple issues into account including biological factors, psychosocial factors, and also health-related behaviors like sleep patterns, nutrition and eating behaviors, and physical activity. The primary research question is which factors have the strongest bearing on gestational weight gain patterns, with the goal of optimizing prenatal care. Methodology The researchers rely on an exploratory question and use a prospective cohort multifactorial research design. The dependent variable was gestational weight gain, measured in two ways. The first was a simplistic method of subtracting self-reported pre-pregnancy weight from last measured weight before delivery, and the second was to compare total weight gain with the recommendations of the Institute of Medicine. The authors classified the dependent variable as being either inadequate or excessive. Independent variables included biological, psychological, and socioeconomic factors. Biological variables included only height. Sociodemographic variables included level of educational attainment, marriage status, and employment status. The authors also classified the participants into binary groups, based on whether the pregnancy was intentional/planned or unplanned. The authors do not explain why they used this variable at the exclusion of others, and do not offer reference to prior literature on whether planned versus unplanned pregnancies has an impact on depression and other psychological variables, let alone weight gain. To measure psychological well-being, the authors use the Perceived Stress Scale, the Prenatal Distress Questionnaire, and the Edinburgh Postpartum Depression Scale, each of which does have a degree of validity and reliability as they have been established in prior literature. Health behaviors were measured in terms of food intake, physical activity, sleeping, and smoking. To perform data analyses, the authors used linear regression models, backwards stepwise models, and simultaneous entry regression. Population A convenience sample was culled from the population of women registered with the National Maternity Hospital in Dublin. Research assistants recruited potential participants from the list of booked appointments, and each participant was offered information and informed consent related to the study. Eligibility requirements included being eighteen years of age or older, capable of giving full informed consent, and only expecting a singleton pregnancy. A total of 1229 women were initially invited, and 984 were eligible and completed all the necessary questionnaires. Women with gestational diabetes and women with indeterminate weight information were also excluded from the study, resulting in a total of 799 valid participants whose data was analyzed. Mean age of the participants was 31 years. Findings In terms of raw data related to socidemographics, the researchers found that almost all (90%) of the participants lived with the father of their child, and roughly 30% were foreign nationals. Half had higher education degrees, and over half had private health insurance. The research showed that over 62% of the women exceeded the IOM gestational weight gain recommendations. The authors found that biological variables correlated most with the excessive weight gain outcome. Most notably, pre-pregnancy obesity, older age, and shorter stature were biological variables linked to excessive gestational weight gain. These are correlations with statistical significance. Likewise, similar univariate analyses of the sociodemographic variables also showed statistically significant correlations between unintentional pregnancy, absence of health insurance, and employment or financial concerns and inadequate gestational weight gain. Only some of the health behaviors, on the other hand, were linked with gestational weight gain. Specifically, increased food intake and smoking cessation were linked with excessive weight gain versus decreased food intake and smoking. Inadequate sleeping was also linked with inadequate weight gain. Interestingly, the authors found that foreign-born mothers were more likely to have excessive weight gain. Conclusions The conclusions are generally justified, particularly with regards to the univariate analyses but also with some of the multivariate analyses taking into account both biological and psychosocial variables. In spite of the potential relevance and impact of this study on prenatal care, there are a few methodological weaknesses in the study that diminish its internal validity. One is that pre-pregnancy weight was measured via self-reports. Also, by classifying the dependent variable in a binary way, by either excessive or inadequate weight gain, the authors do not allow any investigation of nuances or intermediary weight gain. Another weakness in the methodology was that the authors only took height and weight into account as biological variables, instead of also investigating other health variables like blood pressure, and the presence or absence of specific diseases that might impact the metabolism. Also, the means by which behavioral variables were measured were unreliable, particularly with regards to food intake. Food intake was measured via self-reports and only along a progressive style scale where the participant estimated whether their caloric intake during pregnancy was more or less than it was before pregnancy. These methodological weaknesses impede the validity of the results but overall the implications of the study are meaningful on prenatal and perinatal care. References Heery, E., Kelleher, C.C., Wall, P.G., et al. (2014). Prediction of gestational weight gain. Public Health Nutrition 18(8): 1488-1498. https://www.paperdue.com/customer/paper/gestational-weight-gain-2167248#:~:text=Logout-,Gestationalweightgain,-Length3pages Read the full article

[codezup]

Mastering Singleton Pattern: A Hands-On Guide to Efficient Resource Management | Design Patterns

Introduction The Singleton Pattern is one of the most widely used creational design patterns in software development. It ensures that a class has only one instance and provides a global point of access to that instance. This pattern is particularly useful for managing resources that should be accessed in a controlled manner, such as configuration managers, database connections, and logging…