import javax.swing.*; class Dialog { public static void main(String[] args) { JOptionPane.showMessageDialog(null,"Enter the two numbers"); int x=Integer.parseInt(JOptionPane.showInputDialog("Enter first number")); int y=Integer.parseInt(JOptionPane.showInputDialog("Enter second number")); int z=x+y; JOptionPane.showMessageDialog(null,"Sum : " + z); } }