testadapter.java

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import java.awt.Frame ;
import java.awt.event.WindowEvent ;
import java.awt.event.WindowAdapter;

public class TestAdapter {
	public static void main (String [] args){
		Frame f = new Frame ("Java GUI");
		f.setSize (150,300);
		MyAdapter m = new MyAdapter ();
		f.addWindowListener (m);
		f.setVisible (true);
		
	}
}

class MyAdapter extends WindowAdapter {

	public void windowClosing (WindowEvent e){
		System.exit (1);
	}
}