Kode Java

package org.kodejava.example.swing;

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;

public class UndecoratedFrame {
    private static Point point = new Point();

    public static void main(String[] args) {
        final JFrame frame = new JFrame();

        //
        // Disables or enables decorations for this frame. By setting undecorated
        // to true will remove the frame's title bar including the maximize,
        // minimize and the close icon.
        //
        frame.setUndecorated(true);

        //
        // As the the frame's title bar removed we need to close out frame for
        // instance using our own button.
        //
        JButton button = new JButton("Close Me");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        });

        //
        // The mouse listener and mouse motion listener we add here is to simply
        // make our frame dragable.
        //
        frame.addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                point.x = e.getX();
                point.y = e.getY();
            }
        });
        frame.addMouseMotionListener(new MouseMotionAdapter() {
            public void mouseDragged(MouseEvent e) {
                Point p = frame.getLocation();
                frame.setLocation(p.x + e.getX() - point.x,
                        p.y + e.getY() - point.y);
            }
        });

        frame.setSize(300, 300);
        frame.setLocation(200, 200);
        frame.setLayout(new BorderLayout());

        frame.getContentPane().add(button, BorderLayout.NORTH);
        frame.getContentPane().add(new JLabel("Drag Me", JLabel.CENTER),
                BorderLayout.CENTER);
        frame.setVisible(true);
    }
}