| import javax.swing.JOptionPane; public class sum extends Object { public static void main(String args[]) { String firstNumber, secondNumber; int number1, number2, sum; firstNumber = JOptionPane.showInputDialog("enter first number"); secondNumber = JOptionPane.showInputDialog("enter second number"); number1 = Integer.parseInt(firstNumber); number2 = Integer.parseInt(secondNumber); sum = number1 + number2; JOptionPane.showMessageDialog( null, "the sum is" + sum, "results", JOptionPane.PLAIN_MESSAGE); System.exit(0); } } |