Introduction to Java

Java is a widely-used programming language known for its portability, security, and performance. It follows the object-oriented programming (OOP) paradigm and can be used to build a variety of applications, from web servers to mobile apps.

First Java Program

Let's begin by writing your first Java program!

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

This simple Java program prints the message "Hello, World!" to the console. It consists of a class definition public class HelloWorld, and a main method public static void main(String[] args) which is the entry point of any Java program.