import javax.swing.JFrame;
import javax.swing.JWindow;
public class Main {
public static void main(String[] args) {
JFrame f = new JFrame("The Frame");
f.setSize(300, 300);
f.setLocation(100, 100);
JWindow w = new JWindow();
w.setSize(300, 300);
w.setLocation(500, 100);
f.setVisible(true);
w.setVisible(true);
}
}