使JButton的动作侦听器作为方法？ [英] Making an Action Listener for a JButton as a method?

问题描述

如何将这个 ActionListener 变成用于特定 JButton 的方法？

（我知道有可能将其全部扔进一个方法中，但是。.hm。）

How can I make this ActionListener into a method for a specific JButton?
(im aware its possible to throw it all in an method but yeah..hm.)

myJButton.addActionListener(new ActionListener()
{
    public void actionPerformed(ActionEvent e){
       //do stuff
    }
 });

thx y'all，

thx y'all,

编辑：感谢大家的快速反应，我的解释不是很清楚。

edit: thanks everyone for the quick responses, my explanation wasn't very clear.

我调查了lambda的使用，这几乎是我在想的，尽管其他方式也很不错。

I looked into the use of lambdas and it was pretty much what I was thinking of, though the other ways are great to know aswell.

myButton.addActionListener(e -> myButtonMethod());

public void myButtonMethod() {
    // code
}

再次感谢大家。

下次我将尝试变得更加清晰和快捷。

Thank you again, everyone.
I'll try to be more clear and quicker next time.

推荐答案

同样，您的问题仍然不清楚。您在上面的代码具有一种方法，可以将该代码放入其中：

Again, your question remains unclear. Your code above has a method, one that code can be put into:

button1.addActionListener(new ActionListener() {

    @Override
    public void actionPerformed(ActionEvent e) {
        // you can call any code you want here
    }
});

或者您可以从该方法中调用外部类的方法：

Or you could call a method of the outer class from that method:

button1.addActionListener(new ActionListener() {

    @Override
    public void actionPerformed(ActionEvent e) {
        button1Method();
    }
});

// elsewhere
private void button1Method() {
    // TODO fill with code        
}

或者您可以从该代码中调用内部匿名类的方法

Or you could call a method of the inner anonymous class from that code

button1.addActionListener(new ActionListener() {

    @Override
    public void actionPerformed(ActionEvent e) {
        button1Method();
    }

    private void button1Method() {
        // TODO fill with code
    }
});

或者您可以使用lambda：

Or you could use lambdas:

button2.addActionListener(e -> button2Method());

// elsewhere
private void button2Method() {
    // TODO fill with code
}

或者您可以使用方法引用：

Or you could use a method reference:

button3.addActionListener(this::button3Method);

// elsewhere
private void button3Method(ActionEvent e) {
    // TODO fill with code        
}

由您决定清楚您要执行的操作是什么以及阻止您执行此操作的原因。

Up to you to try to be clear on what exactly it is you're trying to do and what's preventing you from doing it.

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