Java Introduction

Java is a popular programming language used to build web applications, mobile apps, desktop software, and enterprise systems. It is known for its reliability, security, and platform independence.

Java follows the principle of "Write Once, Run Anywhere", which means you can run Java programs on any device that has a Java Virtual Machine (JVM).

What is Java?

Java is a high-level, object-oriented programming language developed by Sun Microsystems (now owned by Oracle). It is widely used in modern software development.

Java is simple and easy to learn
Java is object-oriented
Java is platform-independent
Java is secure and robust

Why Use Java?

Used in Android app development
Used in web and enterprise applications
Strong community support
Highly secure programming language

Java Example

Below is a simple Java program that prints a message to the console.

Example

public class Main {
  public static void main(String[] args) {
    System.out.println("Hello, Java!");
  }
}

Try this code

How Java Works

Java code is first compiled into bytecode by the Java compiler. This bytecode is then executed by the Java Virtual Machine (JVM), which allows Java programs to run on different platforms.

Features of Java

Platform-independent
Object-oriented
Secure and reliable
High performance

Where is Java Used?

Android applications
Web applications
Desktop software
Enterprise systems