Can't get displayPanel visible

[dragonlau]

I can't get the displayPanel visible. The only thing I see is the white colour. 22 candles has to be visible, but it didn't show up

The code I have now is:

	public void init() {
		// maak borderlayout aan
		this.setLayout( new BorderLayout() );
		// maak label op top
		labels.add(messagesLabel);
		this.add(labels, BorderLayout.NORTH);
		labels.setBorder( BorderFactory.createEtchedBorder() );
		// maak centrale punt
		this.add(displayPanel, BorderLayout.CENTER);
		// maak buttons aan bottom
		buttons.setBorder( BorderFactory.createEtchedBorder() );
			buttons.add(startButton);
			buttons.add(eenButton);
			buttons.add(tweeButton);
			buttons.add(drieButton);
			buttons.add(vierButton);
			buttons.add(sluitButton);
		this.add(buttons, BorderLayout.SOUTH);

		startButton.addActionListener(this);
		eenButton.addActionListener(this);
		tweeButton.addActionListener(this);
		drieButton.addActionListener(this);
		vierButton.addActionListener(this);
		sluitButton.addActionListener(this);
    }

Can anyone help me out with this, please?

*edit*
I figured it out, it was a very stupid code I put into it