[20160704]Addition program that use JOptionPane for input and output

//Addition program that use JOptionPane for input and output.

import javax.swing.JOptionPane;

public class Addition{
   public static void main(String[] args) {
     String firstNumber=JOptionPane.showInputDialog("Enter first integer!");

     String secondNumber=JOptionPane.showInputDialog("Enter second integer!");

     int num1=Integer.parseInt(firstNumber);
     int num2=Integer.parseInt(secondNumber);

     int sum=num1+num2;

     JOptionPane.showMessageDialog(null,"The sum is:	"+sum,"sum of two integers",JOptionPane.PLAIN_MESSAGE);

   }
}