import java.awt.Dimension;
import java.awt.Toolkit;

import javax.swing.JFrame;

public class CenterFrame_T {
    public static void main(String[] args) {
        CenterFrame Frame = new CenterFrame();
        Frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Frame.show();
    }
}

class CenterFrame extends JFrame {
    // Get Screen Dimensions
    public CenterFrame() {
        Toolkit kit = Toolkit.getDefaultToolkit();
        Dimension screenSize = kit.getScreenSize();
        int screenHeight = screenSize.height;
        int screenWidth = screenSize.width;
        this.setSize(screenWidth/2,screenHeight/2);
        setLocation(screenWidth/4, screenHeight/4);
    }
}