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----------------
// CloseableWindow.java
// °ìÈÌŪ¤Ê¥¦¥£¥ó¥É¥¦¤òÊĤ¸¤ëưºî¤Ç¡¢ÊĤ¸¤ë¤³¤È¤Î¤Ç¤­¤ë¡¢
// ñ¤Ê¤ë¥¦¥£¥ó¥É¥¦¡£
import java.awt.*;

public class CloseableWindow extends Frame {
 public static void main(String[] pastr) {
  Frame frm = new CloseableWindow();

  frm.addWindowListener(new BasicWindowMonitor());
  frm.setSize(300, 200);
  frm.setVisible(true);
 }
}

// BasicWindowMonitor.java
// O'REILLY¤Î¡ÖJAVA Swing¡×¡ÊÍνñ¡Ë¤ËºÜ¤Ã¤Æ¤¿¤ä¤Ä¡£
import java.awt.Window;
import java.awt.event.*;

public class BasicWindowMonitor extends WindowAdapter {
 public void windowClosing(WindowEvent pe) {
  Window w = pe.getWindow();

  w.setVisible(false);
  w.dispose();
  System.exit(0);
 }
}
----------------