A bug with JPanel?

Question

I got a very ackward problem with JPanel. Please check the code below:
import javax.swing.JPanel;
public BasePanel extends JPanel{
    public BasePanel(){
       super();
public class bb extends javax.swing.JDialog {
    public bb(java.awt.Frame parent, boolean modal) {
        super(parent, modal);
        initComponents();
    private void initComponents() {
        final BasePanel basePanel1 = new BasePanel();
        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        basePanel1.setBackground(java.awt.Color.white);
        basePanel1.setBorder(new javax.swing.border.EtchedBorder());
        getContentPane().add(basePanel1, java.awt.BorderLayout.CENTER);
        pack();
    public static void main(String args[]) {
        new bb(null, true).setVisible(true);
}Even though I set the back colour of the panel WHITE, it does not turn into white when the dialog becomes visible. However, if I use JPanel instead of BasePanel while creating panel object, everything works fine. Is this a bug? I compiled and run the code above with both jvm version 1.4.02 and 1.5 beta 2, but the result is same.

Answer 1

sure I did. I left it the class keyword out unintentionally. Furthermore, why shall I setVisible(true) of the BasePanel before packing it? It hasn't been done so in JPanel source code.