A program displays an input dialog to prompt the user to enter an integer (line 11) and adds it to sum (line 15). Line 17 displays a confirmation dialog to let the user decide whether to continue the input. If the user clicks Yes, the loop continues; otherwise the loop exits. Finally, the program displays the result in a message dialog box (line…

SentinelValueUsingConfirmationDialog.java

package learnjava.testing;

import javax.swing.*;


/**
 * Created by Isuru on 20/03/2017.
 */
public class Main {
    public static void main(String args[]){

        int sum = 0;

        // Keep reading data until the user answers no
        int option = JOptionPane.YES_OPTION;

        while(option == JOptionPane.YES_OPTION){
            int data = Integer.parseInt(JOptionPane.showInputDialog("Enter an int value: "));
            sum += data;
            option = JOptionPane.showConfirmDialog(null, "Continue?");
        }

        JOptionPane.showMessageDialog(null, "The sum is " + sum);

    }
}