CylicBarrier使用之barrierAction优先执行

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package com.ilucky.test.jdk.util.concurrent;import java.util.Date;import java.util.concurrent.BrokenBarrierException;import java.util.concurrent.CyclicBarrier;/** * 优先执行: barrierAction * 用于在到达线程屏障时,优先执行barrierAction,方便处理更复杂的业务场景. *  * 应用场景: * 比如我们用一个Excel保存了用户所有银行流水, 每个Sheet保存一个帐户近一年的每笔银行流水, 现在需要统计用户的日均银行流水, * 先用多线程处理每个sheet里的银行流水, 都执行完之后, 得到每个sheet的日均银行流水, 最后, 再用barrierAction用这些线程的计算结果,  * 计算出整个Excel的日均银行流水。 * @author IluckySi * */public class CyclicBarrierTest3 {    public static void main(String[] args) {        CyclicBarrier cb = new CyclicBarrier(3, new CyclicBarrierTestT30());        new CyclicBarrierTestT31(cb).start();        new CyclicBarrierTestT32(cb).start();        new CyclicBarrierTestT33(cb).start();    }}class CyclicBarrierTestT31 extends Thread {    private CyclicBarrier cb;    CyclicBarrierTestT31(CyclicBarrier cb) {        this.cb = cb;    }    public void run() {        try {            Thread.sleep(1000);            System.out.println(new Date() + "计算: name =" + Thread.currentThread().getName());            cb.await();            Thread.sleep(1000);        } catch (BrokenBarrierException e) {            e.printStackTrace();        } catch (InterruptedException e) {            e.printStackTrace();        }        //System.out.println(new Date() + "name =" + Thread.currentThread().getName());    }}class CyclicBarrierTestT32 extends Thread {    private CyclicBarrier cb;    CyclicBarrierTestT32(CyclicBarrier cb) {        this.cb = cb;    }    public void run() {        try {            Thread.sleep(2000);            System.out.println(new Date() + "计算: name =" + Thread.currentThread().getName());            cb.await();            Thread.sleep(1000);        } catch (BrokenBarrierException e) {            e.printStackTrace();        } catch (InterruptedException e) {            e.printStackTrace();        }        //System.out.println(new Date() + "name =" + Thread.currentThread().getName());    }}class CyclicBarrierTestT33 extends Thread {    private CyclicBarrier cb;    CyclicBarrierTestT33(CyclicBarrier cb) {        this.cb = cb;    }    public void run() {        try {            Thread.sleep(3000);            System.out.println(new Date() + "计算: name =" + Thread.currentThread().getName());            cb.await();            Thread.sleep(1000);        } catch (BrokenBarrierException e) {            e.printStackTrace();        } catch (InterruptedException e) {            e.printStackTrace();        }        //System.out.println(new Date() + "name =" + Thread.currentThread().getName());    }}class CyclicBarrierTestT30 extends Thread {    public void run() {        System.out.println("====优先执行====");    }}/**Fri May 12 11:41:43 GMT+08:00 2017计算: name =Thread-1Fri May 12 11:41:44 GMT+08:00 2017计算: name =Thread-2Fri May 12 11:41:45 GMT+08:00 2017计算: name =Thread-3====优先执行====*/
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