JAVA菜鸟入门(16) callback函数

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Java中的callback函数, template:

interface CallBack {    void methodToCallBack();}class CallBackImpl implements CallBack {    public void methodToCallBack() {        System.out.println("I've been called back");    }}class Caller {    public void register(CallBack callback) {        callback.methodToCallBack();    }    public static void main(String[] args) {        Caller caller = new Caller();        CallBack callBack = new CallBackImpl();        caller.register(callBack);    }}

所以classA 的callback函数就是classA本身不去实现这个函数，交付给别的类classB去实现，然后classA直接使用classB已经实现的函数。

为了保证classA和classB能够相互通信，使用了共同的interface。

Interestingly, The ideia behind it is the inversion of control (abbreviated IoC). This paradigma describes the way frameworks work. It is also known as the "Hollywood principle - Don't call me, we will call you"

参考资料:

1 CALLBACK PATTERN IN JAVA ENVIRONMENT

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