Undecorated JDialog border

Question

I have a question regarding the border around an undecorated JDialog using the Metal L&F.

Look at this picture to see the border that is on this window:

I'm trying to figure out how to either get rid of or change the color of the blue border around the very outside of the JDialog. I looked at the UI defaults for the Look & Feel but I wasn't able to come up with any that worked for this.

Does anybody have any ideas on how to get rid of that border?

Thanks!

Suggestion

Can my answer in you another question https://mcmap.net/q/1323490/-color-of-joptionpane-border help you? – Obliging

Answer 1

You need to change the Border of the root pane:

getRootPane().
   setBorder( BorderFactory.createLineBorder(Color.RED) );

Bellamy

Answer 2

If you want to get rid of it you can use

frame.setUndecorated(true);
frame.getRootPane().setWindowDecorationStyle(JRootPane.NONE);

To change the look of it from the Java style to the windows style you can use

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

Neall

This does not do what I want it to. I need the title bar to stay at the top while also having the frame undecorated. The only way to do this is to use the metal look & feel. Setting the window decoration style to none gets rid of the title bar at the top. – Suggestion

Answer 3

You can do something like this:

((JPanel)getContentPane()).setBorder(BorderFactory.createLineBorder(Color.BLUE));

---

You can try to do this in order to change the most outsude border:

getRootPane().setBorder(BorderFactory.createLineBorder(Color.BLUE));

Is this what you want to do?

Weatherley

getRootPane() is inside border - author pointed for outside border of undecorated JDialog – Ace