Blank JFrame caused by creation in an Inner Class

[jay vas]

Hi Guys I have a very weird problem.

I Have a Swing (JFrame based) form generator.

I have an application which uses the form generator, and when
it calls it, the form generated is displayed, but is
completely blank and hangs (does not exit nor show any of its contents).
It doesnt even have the correct background color... But some how
it does have a title. Its just a big grey rectangle.

I 3 code snippets below - 2 of them work fine, but the 3rd
fails. In the third, a hang results. Please help this is very
strange. I suspect it is a bug in JFrame or in the Dispatch Thread or something?

 
        public static void main(String[] args)
{ 
//this way works 
ConnjurForm fidForm = new ConnjurForm(new JFrame());
fidForm.addTextQuestion("Name",Utilities.generateKey());
fidForm.addRadioQuestion("Do you want to add meta data parameters afterwards ?","Yes,No","No");
String[] ff = fidForm.showAndReturnAnswersAsArray();

//this way does to !!! 
JFrame j = new JFrame();
j.setVisible(true);

ConnjurForm fidForm = new ConnjurForm(new JFrame());
fidForm.addTextQuestion("Name",Utilities.generateKey());
fidForm.addRadioQuestion("Do you want to add meta data   parameters afterwards ?","Yes,No","No");
String[] ff = fidForm.showAndReturnAnswersAsArray();


//this way doesnt work.. why does 
/**
final JFrame holder = new JFrame();
JButton jb = new JButton("JB");
holder.getContentPane().add(jb);
jb.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
ConnjurForm fidForm = new ConnjurForm(new JFrame());
fidForm.addTextQuestion("Name",Utilities.generateKey());
fidForm.addRadioQuestion("Do you want to add meta data parameters afterwards ?","Yes,No","No");
String[] ff = fidForm.showAndReturnAnswersAsArray();
}
});
holder.add(jb);
holder.setVisible(true);
*/ 
}

[Michael Dunn]

works OK for me - shows the title bar only (no size), but when expanded
the button is displayed OK

    
import javax.swing.*;
import java.awt.event.*;
class Testing
{
  public static void main(String[] args)
  {
    //this way doesnt work.. why does
    final JFrame holder = new JFrame();
    JButton jb = new JButton("JB");
    holder.getContentPane().add(jb);
    jb.addActionListener(new ActionListener()
    {
      public void actionPerformed(ActionEvent e)
      {
      }
    });
    //holder.add(jb);//not needed, added earlier
    holder.setVisible(true);
  }
}