六号线晚报0522

天气：多云 风力：微风

1. 回调

• 把实现回调接口的类对象传递到方法里面再利用此对象执行操作
• 异步，即在在方法里启动另一个线程来执行操作，或在操作方法里启动线程

public interface CallBack {

    void solve(String text);

}

public class SolveEntity implements CallBack {
    @Override
    public void solve(String text) {
        new Thread(() -> {
            try {
                Scanner scanner = new Scanner(System.in);
                String str = scanner.next();
                System.out.println(str + text);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }).start();

    }
}

public class RequestEntity {

    public void solve(String text, CallBack callBack){
        callBack.solve(text);
        System.out.println(text);
    }
}

    public static void main(String[] args) {
        SolveEntity solveEntity = new SolveEntity();
        RequestEntity requestEntity = new RequestEntity();
        requestEntity.solve("requestEntity message", solveEntity);
    }
}