java - 在 BoxLayout 中调整 JButton 的大小

Question

我正在尝试为我的游戏制作一个简单的菜单。我在中间有 4 个按钮，我想让它们变大一点并将它们居中。

最后一部分有效，但我似乎无法调用我的任何 JButtons 并执行 .setSize/.setPreferedSize(new Dimension()) 就可以了。

public class mainMenu extends JFrame {
private JButton start, highscore, help, stoppen;


public mainMenu() {
    super("Master Mind");
    maakComponenten();
    maakLayout();
    toonFrame();
}

private void maakComponenten() {
    start = new JButton("Start");
    start.setBackground(Color.gray);
    highscore = new JButton("Higscores");
    help = new JButton("Help");
    stoppen = new JButton("Stoppen");
}

private void maakLayout() {
    JPanel hoofdmenu = new JPanel();
    hoofdmenu.setLayout(new BoxLayout(hoofdmenu, BoxLayout.Y_AXIS ));
    hoofdmenu.add(start);
    start.setAlignmentX(CENTER_ALIGNMENT);
    hoofdmenu.add(highscore);
    highscore.setAlignmentX(CENTER_ALIGNMENT);
    hoofdmenu.add(help);
    help.setAlignmentX(CENTER_ALIGNMENT);
    hoofdmenu.add(stoppen);
    stoppen.setAlignmentX(CENTER_ALIGNMENT);
    super.add(hoofdmenu);
}

private void toonFrame() {
    setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    setVisible(true);
    setSize(500,500);

}

public static void main(String[] args) {
    new mainMenu();
}
}

Answer 1

例如，要更改“开始”按钮的大小，

改变:

    start1 = new JButton("Start");

到

    start1 = new JButton("Start") {
        {
            setSize(150, 75);
            setMaximumSize(getSize());
        }
    };