Paint JPanel problem

Question

Hi All
I have 2 classes
class1. has a Jframe with a JPanel.
class1 2. A Has a JPanel called contact
I am calling class2 from class1.
It is placing the the contact Panel onto the JPanel in class1 but does not show. If I resize class1 it the shows that it is there.
I have tried repaint(); with out any luck
any other help would be helpfull
Thanks
Craig

Answer 1

Ok Here you go
I have class1 witch is my main frame called Command class
I have a menu class that has a jTree on it called Menu_Panel
Then I have a class called DataClient which is the panel that I am have Problems with.
Here is the Code
This is the jbInit in the Command Class.
    mainPanel.setLayout(borderLayout3);
    mainPanel.setLayout(borderLayout4);
    topPanel = new Panel_Top();
    mainPanel.add(topPanel, BorderLayout.NORTH);
    menuPanel = new Menu_Panel();
    dataPanel = new DataPanel();
    setMenuItems();
    contentPane = (JPanel)this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(900, 600));
    this.setTitle("Frame Title");
    jMenuFile.add(jMenuFileExit);
    jMenuHelp.add(jMenuHelpAbout);
    jMenuBar1.add(jMenuFile);
    jMenuBar1.add(jMenuHelp);
    contentPane.add(mainPanel, BorderLayout.CENTER);
    mainPanel.add(menuPanel, BorderLayout.WEST);
    mainPanel.add(topPanel, BorderLayout.NORTH);
    mainPanel.add(dataPanel, BorderLayout.CENTER);
    mainPanel.revalidate();
    this.setJMenuBar(jMenuBar1);
    fontResize();
    menuPanel.setDataPanel(dataPanel);   // This is where the Menu_Panel calls the show of DataPanel This is from the Menu_Panel at which point fires the menuPanel.setDataPanel(dataPanel); in the Command Class.
/** Required by TreeSelectionListener interface. */
  public void valueChanged(TreeSelectionEvent e) {
    DefaultMutableTreeNode node = (DefaultMutableTreeNode)
        tree.getLastSelectedPathComponent();
    if (node != null) {
      fromMenu = tree.getLastSelectedPathComponent().toString();
      checkMenuNames ();
public void checkMenuNames (){
  if(fromMenu.equals("Client")){
          dataPanel.showClient();
}This is the DataPanel Class
public class DataPanel
    extends JPanel {
  private DataClient dataClient;
  public void showClient() {
    //  dClient = new Data_Client();
if (dataClient == null){
  System.out.println("This worked");
dataClient = new DataClient();
this.add(dataClient);
}and this is the DataClient class
public class DataClient  extends JPanel{
  XYLayout xYLayout1 = new XYLayout();
  JLabel jLabel1 = new JLabel();
  public DataClient() {
    try {
      jbInit();
    catch(Exception e) {
      e.printStackTrace();
  private void jbInit() throws Exception {
    jLabel1.setText("This is Client");
    this.setLayout(xYLayout1);
    this.add(jLabel1,    new XYConstraints(110, 95, 179, -1));
}Hope you can help me :)
Craig