我怎样才能摆脱那个灰色的盒子?
这就是我所说的:
如果您能帮助我,我将不胜感激
完整代码在这里: http: //pastebin.com/nrpCTjvV
public final void initUI() {
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
panel.setBorder(new EmptyBorder(new Insets(90, 155, 40, 60)));
JButton NewGame = new JButton ("New Game!");
JButton Highscore = new JButton("Highscore");
JButton Credits = new JButton ("Credits");
JButton Website = new JButton ("Website");
JButton Exit = new JButton ("Exit");
panel.add(NewGame);
panel.add(Box.createRigidArea(new Dimension(0, 5)));
panel.add(Highscore);
panel.add(Box.createRigidArea(new Dimension(0, 5)));
panel.add(Credits);
panel.add(Box.createRigidArea(new Dimension(0, 5)));
panel.add(Website);
panel.add(Box.createRigidArea(new Dimension(0, 5)));
panel.add(Exit);
final ButtonGroup entreeGroup = new ButtonGroup();
JRadioButton radioButton;
panel.add(radioButton = new JRadioButton("Music1"));
radioButton.setActionCommand("Music1");
entreeGroup.add(radioButton);
panel.add(radioButton = new JRadioButton("Music2"));
radioButton.setActionCommand("Music2");
entreeGroup.add(radioButton);
panel.add(radioButton = new JRadioButton("No Music", true));
radioButton.setActionCommand("No Music");
entreeGroup.add(radioButton);
add(panel);
pack();
setTitle("Title");
JLabel background = new JLabel(new ImageIcon("background.png"));
add(background);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setResizable(false);
setSize(400, 400);
}