Close JWindow using button

Source code below will show you how to exit a JWindow using a button.

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COMPLETE SOURCE CODE FOR : ClosingAJWindowUsingButton.java
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import javax.swing.JWindow;
import javax.swing.JButton;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.FlowLayout;

public class ClosingAJWindowUsingButton extends JWindow implements ActionListener
{
JButton button=new JButton("Exit");

public ClosingAJWindowUsingButton()
{
 button.addActionListener(this);
 setLayout(new FlowLayout());
 add(button);
 setSize(400,400);
 setVisible(true);
}

public void actionPerformed(ActionEvent evt)
{
 if(evt.getSource()==button)
 {
  System.exit(0);
 }
}

public static void main(String[]args)
{
 ClosingAJWindowUsingButton caj=new ClosingAJWindowUsingButton();
}
}

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JUST COMPILE AND EXECUTE IT
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