1: 2: import java.awt.event.WindowAdapter; 3: import java.awt.event.WindowEvent; 4: 5: /** 6: If you register an object of this class as a listener to any 7: object of the class JFrame, the object will end the program 8: and close the JFrame, if the user clicks the JFrame's 9: close-window button. 10: */ 11: public class WindowDestroyer extends WindowAdapter 12: { 13: public void windowClosing(WindowEvent e) 14: { 15: System.exit(0); 16: } 17: }