Draw graphics beneath components

Question

So I am currently making a login screen that has a cool looking background effect made using the Graphics object and a 'game loop'. When I add in a JTextField though, it is seen underneath everything and not above. Is there anyway to to make the graphics draw underneath all components inside of the JFrame?

Here is an image of the graphics:

The text field is there, just underneath everything being drawn to the surface of the frame. I want to somehow reorder this so it draws underneath components.

Here is my current frame code:

    frame = new JFrame("Login");
    frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
    frame.getContentPane().setPreferredSize(new Dimension(450, 200));
    frame.getContentPane().setBackground(Color.black);
    frame.setBackground(Color.black);
    frame.setLayout(new FlowLayout());

    JTextField user = new JTextField(20);
    user.setLocation(100, 200);
    user.setVisible(true);
    frame.add(user);

    frame.pack();
    frame.setVisible(true);

    frame.createBufferStrategy(2);
    buff = frame.getBufferStrategy();

    Painter painter = new Painter();
    frame.add(painter);

Any help please?

Answer 1

AnimationTest shows one approach. It overrides paintComponent() and invokes super.paintComponent() to ensure that components are rendered atop the background. Click anywhere to position a text field; resize to see how the default FlowLayout works. JPanel is double buffered by default using the existing buffer strategy.