将鼠标监听器的mouseEntered方法用于多个按钮/JLabel

MouseListener mouseListener = new MouseListener() {
    @Override
    public void mouseClicked(MouseEvent e) {
        // 处理鼠标点击事件
    }

    @Override
    public void mouseEntered(MouseEvent e) {
        // 处理鼠标进入事件
        // 可以在这里编写需要执行的代码
    }

    @Override
    public void mouseExited(MouseEvent e) {
        // 处理鼠标离开事件
    }

    @Override
    public void mousePressed(MouseEvent e) {
        // 处理鼠标按下事件
    }

    @Override
    public void mouseReleased(MouseEvent e) {
        // 处理鼠标释放事件
    }
};

JButton button1 = new JButton("按钮1");
JButton button2 = new JButton("按钮2");
JLabel label1 = new JLabel("标签1");
JLabel label2 = new JLabel("标签2");

button1.addMouseListener(mouseListener);
button2.addMouseListener(mouseListener);
label1.addMouseListener(mouseListener);
label2.addMouseListener(mouseListener);