Thread: Blank JFrame

Hey guys,

I am having a problem with my code as it displays a blank JFrame to me whereas it should display a button.

The initialization code stands as follows:

                JFrame frame = new JFrame();
		Canvas canvas = new Canvas();
		canvas.setSize(WIDTH, HEIGHT);
		frame.setResizable(false);
		frame.addWindowFocusListener(new WindowAdapter() {
			@Override
			public void windowGainedFocus(WindowEvent e) {
				canvas.requestFocusInWindow();
			}
		});
		frame.addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent e) {
				closeRequested = true;
			}
		});
		frame.add(canvas);
                try {
			Display.setParent(canvas);
			Display.setDisplayMode(new DisplayMode(WIDTH, HEIGHT));
 
			frame.pack();
			frame.setVisible(true);
 
			Display.create();
		} catch (LWJGLException e) {
			e.printStackTrace();
		}

The above code creates the JFrame as well as the LWJGL display.

At some point during the program, the following method is called:

                public void craft(){
			JButton button = new JButton("Exit");
	        button.addActionListener(new ActionListener() {
	            public void actionPerformed(ActionEvent event) {
	                STATE = GAME;
	                remove();
	                frame.getRootPane().revalidate();
	            }
	        });
	        frame.add(button);
			frame.getRootPane().revalidate();
		}

AS a result nothing is displayed on the JFrame.

I have tested that the method does in fact run and has no errors in completing it, as well as altered the frame.getRootPane().revalidate(); to frame.revalidate(); with no success.
The only success I have had was due to me changing the frame.add(button); to frame.add(button, BlockLayout.Center); which results in the buttons filling the screen, I am not sure where to proceed from here in terms of getting this to work.

Anyone have any ideas?

Thanks

SACoder

Can you post source code ?