Java Tutorial

☕ Welcome to Java Programming

Java is a powerful, object-oriented programming language used for building desktop applications, web applications, mobile apps, and enterprise software worldwide.


// Your first Java program
public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, Java World!");
    }
}

Output:

Hello, Java World!

Why Choose Java?

🌐

Platform Independent

Write once, run anywhere (WORA)

// Runs on Windows, Mac, Linux

🔒

Secure

Built-in security features

// Memory management & security

🧩

Object-Oriented

Everything is an object

class Car {
    String brand;
}

⚡

High Performance

Fast execution with JVM

// Optimized bytecode

🔹 Java Applications

Java is used in various domains:

Desktop Applications: NetBeans, Eclipse, IntelliJ IDEA
Web Applications: Spring, Struts, JSF frameworks
Mobile Apps: Android applications
Enterprise Software: Banking, e-commerce systems
Scientific Applications: MATLAB, data analysis tools

🔹 Java Tutorial Topics

This tutorial covers everything you need to learn Java:

📚 Basics

Java Introduction
Getting Started
Syntax & Statements
Output Methods

🔧 Core Concepts

Variables & Data Types
Operators
Control Structures
Methods

🏗️ OOP

Classes & Objects
Inheritance
Polymorphism
Encapsulation

🚀 Advanced

Exception Handling
Collections
Multithreading
File I/O