import java.awt.*;
import java.awt.event.*;

// This appears in Core Web Programming from
// Prentice Hall Publishers, and may be freely used
// or adapted. 1997 Marty Hall, hall@apl.jhu.edu.

/** A Frame that you can actually quit. Used as
 *  the starting point for most Java 1.1 graphical
 *  applications. QuittableFrame is the Java 1.0 version.
 * @see QuittableFrame
 */

public class CloseableFrame extends Frame {
  public CloseableFrame(String title) {
    super(title);
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
  }

  /** Since we are doing something permanent, we need
   *  to call super.processWindowEvent <B>first</B>.
   */
  
  public void processWindowEvent(WindowEvent event) {
    super.processWindowEvent(event); // Handle listeners
    if (event.getID() == WindowEvent.WINDOW_CLOSING)
      System.exit(0);
  }
}