import javax.swing.JFrame;

public class AlwaysOnTopSample1 {
    public AlwaysOnTopSample1() {
        JFrame frame = new JFrame("AlwaysOnTopSample");
        frame.setSize(100, 100);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.setAlwaysOnTop(true);

        frame.setVisible(true);
    }

    public static void main(String[] args) {
        new AlwaysOnTopSample1();
    }
}