import javax.swing.JOptionPane;

public class TwoNumbersDialog {

  public static void main(String[] args) {
    String num1Str =
         JOptionPane.showInputDialog("Enter first number");
    double num1 = Double.parseDouble(num1Str);
    
    String num2Str =
         JOptionPane.showInputDialog("Enter 2nd number");
    double num2 = Double.parseDouble(num2Str);

    String message = "First number is " + num1 +
                     "\nSecond number is " + num2 +
                     "\nSum is " + (num1 + num2) +
                     "\nDifference is " + (num1 - num2) +
                     "\nProduct is " + (num1 * num2) +
                     "\nQuotient is " + (num1 / num2);
    JOptionPane.showMessageDialog(null, message);
  }
}