多线程-callable

 

 

/**
 * 线程的实现方式三：实现callable接口
 * 好处：
 * 1.可以定义返回值
 * 2.可以抛出异常
 */
public class TestCallable implements Callable<Boolean> {
    @Override
    public Boolean call() {
        for (int i = 1; i <= 100; i++) {
            System.out.println(Thread.currentThread().getName()+"-----》跑了"+i+"步");
        }
        return true;
    }

    public static void main(String[] args) throws ExecutionException, InterruptedException {
        TestCallable tt = new TestCallable();
        //创建执行服务
        ExecutorService ser = Executors.newFixedThreadPool(3);

        //执行提交
        Future<Boolean> r1 = ser.submit(tt);
        Future<Boolean> r2 = ser.submit(tt);
        Future<Boolean> r3 = ser.submit(tt);

        //获取结果
        Boolean rs1 = r1.get();
        Boolean rs2 = r2.get();
        Boolean rs3 = r3.get();

        //关闭服务
        ser.shutdownNow();
    }
}