| Java Example Program/ Sample Source Code 
| import java.awt.BorderLayout; import java.awt.Frame;
 import java.awt.TextField;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 
 class GetOldStateExample {
 public static void main(String args[]) {
 Frame frame = new Frame("WindowAdapterExample");
 TextField textField = new TextField();
 frame.add(textField, BorderLayout.NORTH);
 frame.pack();
 frame.setVisible(true);
 frame.addWindowListener(new WindowAdapter() {
 public void windowClosing(WindowEvent we) {
 System.exit(0);
 }
 });
 }
 }
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