Java:将相同的 Action 监听器添加到多个组合框

Question

我创建了一个 Action 监听器，用于监听 departingStop(组合框对象)是否有任何变化

departingStop.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent arg0) {
          //Lots of code here
     }
});

我还想将此 Action 监听器添加到另一个组合框 (finalStop)，而不必像这样创建单独的监听器:

finalStop.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent arg0) {
          //Lots of code here
     }
});

如何实现？谢谢

Answer 1

您可以将监听器分配给一个变量...

ActionListener listener = new ActionListener() {
     public void actionPerformed(ActionEvent arg0) {
          //Lots of code here
     }
};

然后多次添加...

departingStop.addActionListener(listener);
finalStop.addActionListener(listener);