gui和actionlistener的最佳实践 [英] best practice for gui and actionlistener

问题描述

我知道什么是把actionlistener放在java中的最佳实践？例如在我的类a是我的gui，（设计）然后类b将是我的actionlistener？或者是一个页面中的所有更好？
感谢。

I would know know what is the best practice for putting actionlistener in java? for example in my class a is my gui, (design) then class b would be my actionlistener? or is it better in one one page all of them? thanks.

推荐答案

这取决于。如果你想使用你的 ActionListener 几个UI组件：按钮，菜单项，...那么它是适当的在一个单独的类。另外，如果 actionPerformed 方法中的代码有很多行，那么单独做它是有意义的。

It depends. If you want to use your ActionListener for several UI components: button, menu item,... then it would be appropriate to do it in a separate class. Also, if the code inside the actionPerformed method is of a lot of lines it makes sense to do it separately.

否则，如果您的类中没有很多UI组件，那么您可以将 ActionListener 定义为匿名实现，并将其直接附加到您的组件。 p>

Otherwise, if you don't have a lot of UI components in your class then you can define the ActionListener as an anonymous implementation and attach it to your component directly.

button.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    // ...
  }
});

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