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FutureMain.java
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36 lines (28 loc) · 1.11 KB
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package chapter5;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.FutureTask;
/**
* Created by 13 on 2017/5/8.
*/
public class FutureMain {
public static void main(String args[]) throws ExecutionException, InterruptedException {
//构造FutureTask
FutureTask<String> futureTask = new FutureTask<String>(new RealData2("a"));
ExecutorService executorService = Executors.newFixedThreadPool(1);
//执行FutureTask,相当于前一个例子中的client.request("a")发送请求
//在这里开启线程进行RealData的call()执行
executorService.submit(futureTask);
System.out.println("请求完毕");
try {
//这里依然可以做额外的数据操作,使用sleep代替其他业务逻辑的处理
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
//相当于前一个例子中的data.getResult(),取得call()方法的返回值
//如果此时call()方法没有执行完成,则依然会等待
System.out.println("数据=" + futureTask.get());
}
}