Java is a versatile, object-oriented programming language widely used for building applications. Beginners often start with simple programs to understand the basics of Java syntax, structure, and functionality. Below are some introductory Java programs with explanations.

1. Hello World Program

The "Hello World" program is the simplest way to get started with Java. It demonstrates the basic structure of a Java program.

Explanation:

• public class HelloWorld: Defines a class named HelloWorld. Every Java program must have at least one class.

• public static void main(String[] args): This is the entry point of the program where execution begins.

• System.out.println("Hello World!");: Prints the message "Hello World!" to the console.

2. Program to Add Two Numbers

This program takes two numbers as input and calculates their sum.