import java.io.*;
import java.lang.*;
class StaticAdd
{
	public static void main(String args[])
		{
 	 		int n1=10,n2=20; //Static Defining of two Integer Variables
			n1+=n2; // Performing Addition
			System.out.println("Addition: "+n1);
		}
}

 OUTPUT:

Compilaton   : javac StaticAdd.java
Execution    : java StaticAdd
Addition:30

 

Buy Head First Java

Best Book for Java

Beginner's Book