usebrowserframe.java

也就是说

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class usebrowserFrame extends Frame
{
	public usebrowserFrame(String str)
	{
		super(str);
	}
	public boolean handleEvent(Event evt)
	{		
		if(evt.id==Event.WINDOW_DESTROY)
		{
			dispose();
			System.exit(0);
			return true;
		}
		else
			return super.handleEvent(evt);		
	}
}