Tutorials

Object-Oriented Programming (OOP) is the foundation of Java. It helps build structured and reusable code. 1. Four Pillars of OOP 2. Simple Example class Car {void start() {System.out.println(“Car starts”);}} class Tesla extends Car {void start() {System.out.println(“Tesla starts silently”);}} This is polymorphism through method overriding.

Java variables are containers that store data values. Every program relies on variables to process information. 1. Types of Variables in Java Java supports three types of variables: 2. Example public class Demo {int age = 22; // Instance variablestatic String city = “Hyderabad”; // Static variable } 3. Quick Tips