import java.awt.*;
import java.swing.*;
public class Window extends JFrame {
private static final Dimension SCREEN_SIZE = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
private static final int SCREEN_HEIGHT = (int) SCREEN_SIZE.getHeight() / 2;
private static final int SCREEN_WIDTH = (int) SCREEN_SIZE.getWidth() / 2;
public Window() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
}
}