java 标签组 鼠标监听

JLabel 不像按钮，要添加鼠标事件的话 用鼠标事件监听：
JLabel jl = new JLabel();
jl.addMouseListener(new MouseListener(){
public void mouseClicked(MouseEvent e) {
// 处理鼠标点击
}
public void mouseEntered(MouseEvent e) {
// 处理鼠标移入
}
public void mouseExited(MouseEvent e) {
// 处理鼠标离开
}
public void mousePressed(MouseEvent e) {
// 处理鼠标按下
}
public void mouseReleased(MouseEvent e) {
// 处理鼠标释放
}
});