JDialog and JFrame *HELP* !!!

[Donald Wedding]

Here's what I am trying to accomplish.
I have a "JFrame" with some data on it contained inside of a JTable.
When I click on some data in the JTable, I want a JDialog box to pop up.
I need the box to be in the foreground and to be modal.
However, when I run my code to JDialog box goes BEHIND my JFrame. Since the JDialog is Modal and it is behind the JFrame, I can't get to it to do anything. My screen is locked up.
How can I do what I want to do? By the way, I have to use SWING because the requirements for the SCJD exam won't let me use any AWT.
Here's the code I'm using.
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public void mouseClicked( MouseEvent ev )
{
JDialog dialog = new JDialog();
dialog.setEnabled(true);
dialog.setModal(true);
dialog.getContentPane().add(new JLabel("hi there"));
dialog.setVisible(true);
dialog.pack();
dialog.show();
}
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