Source of JOptionPaneYesNoDemo.java

Structures and functions

public class JOptionPaneYesNoDemo

  1: //JOptionPaneYesNoDemo.java
  2: //Illustrates the use of a JOptionPane to get a Yes or No answer
  3: //from the user.
  4: 
  5: import javax.swing.JOptionPane;
  6: 
  7: public class JOptionPaneYesNoDemo
  8: {
  9:     public static void main(String[] args)
 10:     {
 11:         int answer = JOptionPane.showConfirmDialog(null, "End program?",
 12:             "Click Yes or No:", JOptionPane.YES_NO_OPTION);
 13: 
 14:         if (answer == JOptionPane.YES_OPTION)
 15:             System.exit(0);
 16:         else if (answer == JOptionPane.NO_OPTION)
 17:             System.out.println("One more time");
 18:         else
 19:             System.out.println("This is impossible");
 20: 
 21:         System.exit(0);
 22:     }
 23: }