package example.CallBackExample;

import java.lang.reflect.Method;

/**

* Callback function

*

* TODO: need to check this example.

*

* Reference:

* - https://zhuanlan.zhihu.com/p/348747542

*/

public class CallBackBase {

public static void main(String[] args) {

Request request = new Request();

System.out.println("[Main] open a thread to async request.");

new Thread(() -> {

try {

request.send(Callback.class, Callback.class.getMethod("processResponse"));

} catch (Exception e) {

e.printStackTrace();

}

}).start();

System.out.println("[Main] done, I will do another thing.");

}

}

class Request {

public void send(Class clazz, Method method) throws Exception {

Thread.sleep(3000);

System.out.println("received the request.");

method.invoke(clazz.newInstance());

}

}

class Callback {

public void processResponse() {

System.out.println("call back: deal with the response.");

}

}