/*实现一个竞拍抢答程序:要求设置三个抢答者(三个线程),而后同时发出抢答指令,抢答成功者显示成功提示,抢答失败者给出失败提示。*/ package Java多线程_01; import java.util.concurrent.Callable; import java.util.concurrent.FutureTask; class MyThread_08 implements Callable<String>{ private boolean flag = false; @Override public String call() throws Exception{ synchronized(this) { if(this.flag == false) { this.flag = true; return Thread.currentThread().getName()+"抢答成功!"; }else { return Thread.currentThread().getName()+"抢答失败!"; } } } } public class homework_03 { public static void main(String[] args) throws Exception{ MyThread_08 mt = new MyThread_08(); FutureTask<String> taskA = new FutureTask<String>(mt); FutureTask<String> taskB = new FutureTask<String>(mt); FutureTask<String> taskC = new FutureTask<String>(mt); new Thread(taskA, "竞赛者A").start(); new Thread(taskB, "竞赛者B").start(); new Thread(taskC, "竞赛者C").start(); System.out.println(taskA.get()); System.out.println(taskB.get()); System.out.println(taskC.get()); } }