Java 25 Simplifies Main Method

Day 4 of Java Fundamentals 🚀 Today I revised the Inheritance in Java. Inheritance allows a class to acquire properties and methods of another class. Benefits: ✔ Code reusability ✔ Reduced duplication ✔ Better code structure Example: Dogs inherit behavior like eat() from Animal. 🔹 Multiple Inheritance in Java Java does not support multiple inheritance using classes to avoid complexity (diamond problem). However, it can be achieved using interfaces. 🔹 What is an Interface? An interface is a blueprint that contains abstract methods. A class can implement multiple interfaces, allowing Java to achieve multiple inheritance in a safe way. Example: A class can implement both Printable and Scannable interfaces. Learning Java fundamentals step by step to strengthen my core concepts 💻 #Java #LearningInPublic #SoftwareDevelopment #JavaDeveloper

🚀 Day’s Learning – Java Interface Evolution Today I explored how interfaces became more powerful in Java. Earlier in Java 7, interfaces could only contain abstract methods. But starting from Java 8, interfaces became much more flexible: ✅ Default Methods – allow method implementation inside interfaces. ✅ Static Methods – utility methods that belong to the interface itself. Then Java 9 introduced another improvement: ✅ Private Methods – used internally within interfaces to avoid repeating common code between default and static methods. 📌 Quick Evolution Java 7 → Abstract methods only Java 8 → Default + Static methods Java 9 → Private methods Small features like these show how Java continuously evolves to make code more reusable and maintainable. Excited to keep learning more about modern Java development. 💻 #Java #Java8 #Java9 #Programming

🔹 ArrayList vs Vector in Java –. What’s the Difference? While learning Java Collections, I explored the difference between ArrayList and Vector. Both are dynamic arrays, but they behave differently in important ways. ✅ ArrayList • Not synchronized (not thread-safe) • Faster performance • Introduced in Java 1.2 • Grows by 50% when capacity is full ✅ Vector • Synchronized (thread-safe) • Slower due to synchronization • Legacy class (introduced in Java 1.0) • Doubles its size when capacity is full 💡 Key Takeaway: In modern Java development, ArrayList is preferred for better performance. Vector is mainly used for backward compatibility. Understanding small differences like these helps write efficient and scalable code 🚀 Thank you Anand Kumar Buddarapu Sir for your guidance and motivation. Learning from you was really helpful! 🙏 Thank you Uppugundla Sairam Sir and Saketh Kallepu Sir for your guidance and inspiration. Truly grateful to learn under your leadership. 🙏 #Java #CoreJava #JavaCollections #Programming #SoftwareDevelopment #Learning

🚀 NEW PROJECT: JAVA MASTERCLASS – PART 1 I have started a GitHub series called Java Masterclass, where I explain core and advanced Java concepts through practical code examples. The goal of this project is to create a structured learning resource for developers who want to learn Java or strengthen their understanding of its fundamentals through clear and practical implementations. 📚 Currently covered topics in the repository: • List Structures • Object-Oriented Programming (OOP) 🔗 GitHub Repository : https://lnkd.in/dBb625M7 I would be happy to hear your feedback and suggestions. #java #backenddevelopment #softwareengineering #programming #github

💻 Day 13 – File Handling in Java Today I explored File Handling in Java, which allows programs to create, read, write, and manage files. This is an important concept because real-world applications often need to store and retrieve data from files. Things I learned today: 🔹 How to create a file using File class 🔹 Writing data into a file using FileWriter 🔹 Reading data from a file 🔹 Handling errors using IOException File handling helps programs store information permanently instead of losing it when the program ends. 💡 Key takeaway: File handling enables Java programs to interact with external data and manage information efficiently. Learning something new every day and strengthening my Java fundamentals step by step 🚀 #Java #FileHandling #Programming #LearningInPublic #CodingJourney #ComputerScience #Day13

Day 9 – Java Learning Journey Today I continued strengthening my Java fundamentals, focusing on method overriding and important rules in inheritance. Key concepts I explored: • Method Overriding Rules in Java The child class method must have the same method signature as the parent class method. The return type must be the same or covariant (a subclass of the parent return type). The method cannot be static, because static methods belong to the class rather than the object. • Covariant Return Types Java allows a child class method to return a more specific type than the parent class method, making inheritance more flexible. • Static vs Instance Methods I also learned why static methods cannot be overridden and are instead method hidden, which behaves differently from runtime polymorphism. Step by step, continuing to build a stronger foundation in Core Java and OOP concepts. 🚀 #Java #CoreJava #OOP #MethodOverriding #Programming #SoftwareDevelopment #LearningJourney

#Day13 of learning Java from Aditya Tandon CoderArmy Constructors in Java ➤ Special method used to initialize objects ➤ Automatically called when object is created ➤ Types: Default & Parameterized Also explored: ➤ Constructor Overloading ➤ Constructor Chaining using this() ➤ Constructors cannot be called manually Objects get memory in Heap, and if memory is not available → Runtime Exception.

🚀 I’ve just published my Java Day 4 article, where I learned one of the most important foundations of Java: Classes and Objects. Until now, my programs were mainly about writing statements, using variables, and getting output. But today, I understood something bigger: how Java programs are actually structured. Here’s what I learned: ✔ A class is a blueprint that defines data and behavior ✔ An object is a real instance created from that class ✔ Classes help organize code, and objects make it practical and usable ✔ This is the core idea behind Object-Oriented Programming in Java Working with classes and objects made my code feel more organized, more meaningful, and closer to how real software is built. This topic also helped me realize that programming is not just about writing lines of code—it is about designing systems in a structured way. #Java #LearningInPublic #BCA #ObjectOrientedProgramming #ProgrammingJourney #BeginnerDeveloper #LearnJava #StudentLife #Day4

#Day15 of learning Java from Aditya Tandon CoderArmy Today I learned static & final in Java ➤ static → belongs to the class, shared by all objects ➤ Static methods can access only static members ➤ Static blocks run once when class loads ➤ final → cannot be changed Notes: https://lnkd.in/gUHSdaFN

When I first started learning Java, garbage collection felt like magic. 1)You create objects. 2)The program get runs. 3)Unused memory gets cleaned up. But Java memory is not just one big box. Here is the simple model: * New objects start in Young Generation * Long-living objects move to Old Generation * Unused objects get removed by the Garbage Collector Example: A temporary list created inside a method usually dies young and gets cleaned quickly. But something like cache data or a session object can survive longer and move to the Old Generation. That matters because: * Young Generation collection is usually fast * Old Generation collection is heavier * Understanding both helps you reason about performance #Java #SpringBoot #BackendDevelopment #SoftwareEngineerr #javadeveloper