鼠标监听事件MouseListener

public class Demo extends JFrame {
    private JTextArea textArea;
 
    public Demo() {
        setBounds(100, 100, 470, 300);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        Container c = getContentPane();
        c.setLayout(null);
 
        JLabel label1 = new JLabel("鼠标事件区域");
        label1.setBounds(284, 37, 160, 20);
        c.add(label1);
 
        JLabel label = new JLabel();
        label.setBounds(244, 57, 160, 141);
        label.setBorder(BorderFactory.createLineBorder(Color.RED));
        c.add(label);
 
        textArea = new JTextArea();//创建文本域
        JScrollPane scrollPane = new JScrollPane(textArea);//滚动面板
        scrollPane.setBounds(20, 30, 190, 190);
        c.add(scrollPane);
 
        label.addMouseListener(new MyMouseEvent());//调用自定义方法类
 
        setVisible(true);
    }
 
    //在MyMouseEvent上，Alt+Ins，快速创建方法。
    class MyMouseEvent implements MouseListener {
        @Override
        public void mouseClicked(MouseEvent e) {
            int btn = e.getButton();//获取鼠标按键
            switch (btn) {
                case MouseEvent.BUTTON1:
                    textArea.append("鼠标左键被点击\n");
                    break;
                case MouseEvent.BUTTON2:
                    textArea.append("鼠标滚轮被点击\n");
                    break;
                case MouseEvent.BUTTON3:
                    textArea.append("鼠标右键被点击\n");
                    break;
            }
            int count = e.getClickCount();
            textArea.append("鼠标被点击了" + count + "次\n");
        }
 
        public void mousePressed(MouseEvent e) {
            textArea.append("鼠标被按下\n");
        }
 
        public void mouseReleased(MouseEvent e) {
            textArea.append("鼠标被释放\n");
        }
 
        public void mouseEntered(MouseEvent e) {
            textArea.append("鼠标进入区域\n");
        }
 
        public void mouseExited(MouseEvent e) {
            textArea.append("鼠标离开区域\n");
        }
    }
 
    public static void main(String[] args) {
        new Demo();
    }
}