原子类-Atomic*Array

本文演示原子数组的使用方法，我们使用100自增线程和100自减线程对AtomicIntegerArray进行自增和自减操作，核对最终的结果是否为零。

实例代码

　　实例代码如下，最终结果为零。

　　

package com.yang.atomic;

import java.util.concurrent.atomic.AtomicIntegerArray;

/**
 * 本实例演示原子数组
 */
public class AtomicIntegerArrayDemo {
    private static AtomicIntegerArray atomicIntegerArray = new AtomicIntegerArray(100);

    public static void main(String[] args) throws InterruptedException {
        Increment incrementRunnable=new Increment(atomicIntegerArray);
        Decrement decrementRunnbale=new Decrement(atomicIntegerArray);
        Thread[] incrementThreads=new Thread[100];
        Thread[] decrementThreads=new Thread[100];
        for (int i = 0; i < 100; i++) {
            incrementThreads[i]=new Thread(incrementRunnable);
            decrementThreads[i]=new Thread(decrementRunnbale);
            incrementThreads[i].start();
            decrementThreads[i].start();
        }

        for (int i = 0; i < 100; i++) {
            incrementThreads[i].join();
            decrementThreads[i].join();
        }


        for (int i = 0; i < 100; i++) {
            System.out.println(atomicIntegerArray.get(i));
        }
        System.out.println("运行结束");
    }

}

class Increment implements Runnable {

    private AtomicIntegerArray array;

    public Increment(AtomicIntegerArray array) {
        this.array = array;
    }

    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            array.getAndIncrement(i);
        }
    }
}


class Decrement implements Runnable {

    private AtomicIntegerArray array;

    public Decrement(AtomicIntegerArray array) {
        this.array = array;
    }

    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            array.getAndDecrement(i);
        }
    }
}