JPanel占用整个JFrame的大小。 BorderLayout的

Question

I have problem with my JPanel , which alone takes the whole JFrame space. I want to add two JPanel 's in a single JFrame . I'm helping myself with eclipse plugin WindowMaker, but I also tried to code the layout by hand - to no avail. There's no way that I can resize my JPanel eg make it 50% of its size. I read about this case and tried to understand LayoutManagers. But even if I put my JLabel to corner or any specific side, nothing changes so far. Can somebody help me with that?

Code sample: private JPanel contentPane;

/**
 * Create the frame.
 */
public GUI() {

    setTitle("GALAXY INVADERS: CASTELO EDITION");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    setBounds(200, 100, 1000, 600);


    getContentPane().setLayout(new BorderLayout());

    // init of the Panel
    contentPane = new MyPanel2();

    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
    contentPane.setLayout(new BorderLayout(300, 400));
    setContentPane(contentPane);

}

MyPanel2 is a class which extends JPanel.

Answer 1

BorderLayout has 5 available positions onto which components are added...

By default, the CENTER position will occupy the whole available space of the container.

Try placing you other components into different positions or try a different layout manager.

Take a look at Laying Out Components Within a Container for more details...