Java Inheritance Explained: OOP Concept for Code Reusability

🚀 Day 14/45 – Understanding Inheritance in Java On Day 14 of my Java learning journey, I explored the concept of Inheritance, one of the core pillars of Object-Oriented Programming. Inheritance allows one class to acquire the properties and behaviors of another class, promoting code reuse and better program structure. 📚 What I Learned Today Today I learned: ✔ What inheritance is and how it works ✔ Parent (base) class and child (derived) class ✔ Using the extends keyword in Java ✔ Types of inheritance such as single and multilevel 💻 Practice Work To apply my learning, I implemented: • A basic inheritance example using person and student classes • An employee-manager example to demonstrate inherited properties 🎯 Key Takeaway Inheritance helps reduce code duplication and makes programs more organized and scalable. It is a powerful feature that plays a key role in building real-world applications.Understanding OOP concepts step by step is making programming more structured and logical. #Java #Programming #LearningInPublic #CodingJourney #SoftwareDevelopment #OOP

Day 14 – Exploring ArrayList in Java Today I learned about ArrayList, one of the most commonly used classes in the Java Collections Framework. Unlike arrays, ArrayList provides a dynamic way to store data, meaning its size can grow or shrink as needed. Things I explored today: 🔹 Creating an ArrayList 🔹 Adding elements using add() 🔹 Accessing elements using get() 🔹 Removing elements using remove() 🔹 Finding the size using size() Example concept: An ArrayList can store multiple values and allows us to easily manage data without worrying about fixed sizes like arrays. 💡 Key takeaway: ArrayList makes it easier to store, manage, and manipulate collections of data dynamically. Step by step, I’m continuing to strengthen my understanding of Java and real-world programming concepts 🚀 #Java #ArrayList #Collections #Programming #LearningInPublic #CodingJourney #ComputerScience #Day14

Today I revised an important Java concept: String Comparison == vs .equals(). 🔹 == operator compares memory references (addresses). 🔹 .equals() method compares the actual content of the strings. Example: • When strings are created using literals, they refer to the same object in the String Constant Pool, so == may return true. • When strings are created using new String(), separate objects are created in heap memory, so == returns false even if the content is the same. Understanding this difference helps avoid common mistakes when comparing strings in Java. Thanks to my mentors for their guidance: Saketh Kallepu Anand Kumar Buddarapu Uppugundla Sairam #Java #StringComparison #JavaBasics #Programming #LearningJourney #Codegnan

📚 **Day 32 – Java OOP: Aggregation vs Composition Today I learned the difference between Aggregation and Composition in Java. Aggregation – A loose "Has-A" relationship where objects can exist independently. Example: A Mobile Phone and a Charger. 🔹 Composition – A strong "Has-A" relationship where the child object depends on the parent. Example: A Mobile Phone and its Operating System. #Java #OOP #JavaDeveloper #Programming #LearningJourney #TapAcademy

⚙️ Learning Update : Multithreading Fundamentals in Java. Today I started exploring the Multithreading chapter in Java and learned several important concepts related to how operating systems and programs manage tasks and CPU execution. 🔹 Process vs Threads A process is an independent program in execution with its own memory space, while a thread is a smaller unit of execution within a process that shares the same resources. Threads help programs perform multiple tasks efficiently. 🔄 Context Switching Context switching occurs when the CPU switches from one thread or process to another, allowing multiple tasks to run seemingly at the same time. 🖥️ CPU Scheduling CPU scheduling is the method used by the operating system to decide which process or thread should use the CPU at a particular time. Efficient scheduling improves system performance and responsiveness. ⏱️ Time Sharing Time sharing allows multiple processes to share the CPU by allocating a small time slice to each process, giving the illusion that they are running simultaneously. 🔀 Multitasking vs Multithreading 🔹 Multitasking refers to running multiple programs at the same time. 🔹 Multithreading refers to running multiple threads within a single program simultaneously. 💡 Understanding these concepts is essential for building high-performance, responsive, and concurrent applications in Java. Excited to continue learning deeper concepts of multithreading and concurrent programming. #Java #Multithreading #Programming #SoftwareDevelopment #Coding #LearningJourney #ComputerScience #BackendDevelopment 🚀

Exploring Jagged Arrays in Java 🚀 While learning about arrays in Java, I came across an interesting concept where an array can store other arrays. In simple terms, it is an array of arrays. For example, if we want to store the ages of students from two classrooms, where the first classroom has 3 students and the second classroom has 5 students, we can use a jagged array: int[][] a = new int[2][]; a[0] = new int[3]; a[1] = new int[5]; Here, the main array stores two sub-arrays. Each sub-array can have a different size, which makes it a Jagged Array. This shows that in Java, an array can hold references to other arrays, making the structure flexible for storing irregular data. Concepts like these help in understanding memory structure in Java and how arrays work internally in JVM. #TapAcademy #Java #Programming #DSA #Coding #LearningJourney #JavaDeveloper

Today’s session focused on Types of Inheritance in Java – including Single Inheritance, Multilevel Inheritance, Hierarchical Inheritance, Hybrid Inheritance, Multiple Inheritance, and Cyclic Inheritance. We also discussed the rules of inheritance, the role of super() in constructor chaining, and how inheritance improves code reusability and class relationships in Object-Oriented Programming. Additionally, learners explored why Java is considered a dynamic, hybrid, and statically typed programming language, strengthening their understanding of core Java concepts and real-time programming applications. 🚀💻 TAP Academy Bibek Singh #Java #OOP #Inheritance #Programming #LearningJourney #SoftwareDevelopment

Today’s session focused on Types of Inheritance in Java – including Single Inheritance, Multilevel Inheritance, Hierarchical Inheritance, Hybrid Inheritance, Multiple Inheritance, and Cyclic Inheritance. We also discussed the rules of inheritance, the role of super() in constructor chaining, and how inheritance improves code reusability and class relationships in Object-Oriented Programming. Additionally, learners explored why Java is considered a dynamic, hybrid, and statically typed programming language, strengthening their understanding of core Java concepts and real-time programming applications. 🚀💻 TAP Academy Bibek Singh #Java #OOP #Inheritance #Programming #LearningJourney #SoftwareDevelopment

Day 8 of My Java Learning Journey ☕💻 Today I continued strengthening my core Java fundamentals and focused on understanding Method Overloading and basic Inheritance concepts. What I practiced today: • Implemented method overloading by creating an Area Calculator for Square, Rectangle, and Circle • Learned how Java decides which method to call at compile time (Compile-Time Polymorphism) • Practiced taking user input using the Scanner class • Explored the basics of Inheritance using parent and child classes • Understood how child classes can access methods from parent classes One key takeaway today: Writing small programs helps reinforce concepts much better than just reading theory. Next on the learning roadmap: • Method Overriding • Runtime Polymorphism • Deeper understanding of Object-Oriented Programming in Java Step by step, building stronger backend fundamentals. #Java #LearningInPublic #Programming #BackendDevelopment #100DaysOfCode #JavaDeveloper

⚡ Small concept, big impact in Java! While learning Java, I realized that Arrays are powerful but they also come with some important limitations. 🔹 Arrays store only homogeneous data types 🔹 Their size is fixed once created 🔹 They require contiguous memory allocation Because of these limitations, Java provides Collections like ArrayList and LinkedList, which support dynamic resizing and more flexibility. Understanding these fundamentals helps developers choose the right data structure for better and efficient programs. 📚 Learning step by step and strengthening my Java foundation as a Full Stack Developer. 💬 Do you prefer Arrays or Collections while coding in Java? #TapAcademy #Java #JavaDeveloper #Programming #DataStructures #SoftwareDevelopment #CodingJourney #LearningInPublic