JPanel NullPointerException

[FlyNn]

Hi guys,

So I want to update some panels on my GUI when a button gets pressed.
I got action listener assigned and everything works - but.

When I click a button the code gets an Panel object. This is my panel.

public class LoginPane extends JPanel{

    public LoginPane(){

        JButton test = new JButton("Login test");

        this.add(test);

    }
}

The action listener calls this method:

public static void loginPanel(){

        loginPane = new LoginPane();

        [B]content.add(loginPane, BorderLayout.CENTER);[/B]

        content.repaint();

        content.updateUI();

    }

I've set line to bold that errors out.

When I press a button, I get a compiler error:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at GUI.MainFrame.loginPanel(MainFrame.java:77)
at Listeners.LoginListener.actionPerformed(LoginListe ner.java:14)
at javax.swing.AbstractButton.fireActionPerformed(Abs tractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed (AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed (DefaultButtonModel.java:387) etc....

Any help would be appreciated.

[eRaaaa]

content == null?

[FlyNn]

ahhh man, such a stupid mistake i made. :D Instead of adding to the frame, I kept adding to another JPanel(content)

Thanks for making me realize that