import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class CenteredFrameTest{
	public static void main(String [] args)
	{
		CenteredFrame frame=new CenteredFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}
class CenteredFrame extends JFrame
{
	public CenteredFrame()
	{
	 Toolkit kit=Toolkit.getDefaultToolkit();
	 Dimension screenSize=kit.getScreenSize();
	 int screenHeight=screenSize.height;
	 int screenWidth=screenSize.width;
	 setSize(screenWidth/2,screenHeight/2);
	 setLocation(screenWidth/4,screenHeight/4);
	 Image img=kit.getImage("icon.gif");
	 setIconImage(img);
	 setTitle("CenteredFrame");
 }
}