Where is problem?

Question

when i programming with JAVA SWING
i got frame with tatle "Hello world" :
http://www.ginweb.puslapiai.lt/a1.jpg
when i have tried to open menu :
http://www.ginweb.puslapiai.lt/b1.jpg
and when i trie to move it :
http://www.ginweb.puslapiai.lt/c1.jpg
::::why it is so?
code is --------------------------------- :
import javax.swing.*;       
public class HelloWorldSwing {
    private static void createAndShowGUI() {
        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);
        //Create and set up the window.
        JFrame frame = new JFrame("HelloWorldSwing");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Add the ubiquitous "Hello World" label.
        JLabel label = new JLabel("Hello World");
        frame.getContentPane().add(label);
        frame.setSize(100, 100);
        //Display the window.
        frame.pack();
        frame.setVisible(true);
    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
}

Answer 1

It works almost fine for me but I have slightly different bugs (JDK1.4.2_09 on XP).
- I often get a stuck "resize SE" cursor
- When opening the menu, if the frame icon overlaps the minimise/maximise icons, then on closing, the frame icon is drawn as a grey rectangle