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Core Java
Mastering Polymorphism in Java: Real-World Payment System Example with Deep Dive
1. What Is Polymorphism? Polymorphism means "many forms" — the ability of an object to take on multiple behaviors through a common...

coding z2m
6 days ago3 min read
Inheritance in Java
🎯 Goal of Inheritance Inheritance enables code reuse and creates a hierarchical relationship between classes. It allows a subclass to...

coding z2m
Jun 302 min read
Encapsulation with Getters/Setters
🎯 Goal of Encapsulation Encapsulation is the practice of hiding internal object state and exposing access via controlled methods...

coding z2m
Jun 303 min read
Java Constructors – Real-World Case Study
🎯 Concept Overview Type Purpose Default Constructor No parameters, provides default initialization Overloaded Constructor Multiple...

coding z2m
Jun 302 min read
Classes and Objects
🎯 Concept : A class is a blueprint; an object is a real-world entity created from that blueprint. 🏦 Real-World Scenario : Banking...

coding z2m
Jun 302 min read
Interview-focused Java 21 preparation strategy
✅ PHASE 1: Mastering Java OOP with Java 21 Features 🔹 Core OOP Concepts Encapsulation, Inheritance, Polymorphism, Abstraction Interfaces...

coding z2m
Jun 302 min read
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