public class Sync {

public static void main(String[] args) {
FutureTask futureTask = new FutureTask();
Future<String> future = futureTask.submitaaa("异步调用开始");

System.out.println("-----------主线程------------");
    }
}

//开启新的线程,实现异步
class FutureTask{

public Future<String> submitaaa(String s){

return Executors.newCachedThreadPool().submit(new Callable<String>() {

@Override
public String call() throws Exception {
Thread.sleep(10000);
Busi busi = new Busi();
;
return busi.getString(s);
        }
    });
  }
}

//需要异步处理的操作

class Busi{

public String getString(String s) {

System.out.println("-------Busi--------");
return s;
  }
}

 

以上是使用多线程实现的异步调用