qingfeng2556的

AtomicInteger，一个提供原子操作的Integer的类。在Java语言中，++i和i++操作并不是线程安全的，在使用的时候，，不可避免的会用到synchronized关键字。而AtomicInteger则通过一种线程安全的加减操作接口。

import java.text.SimpleDateFormat;

import java.util.Date;import java.util.Timer;import java.util.TimerTask;import java.util.concurrent.ScheduledThreadPoolExecutor;import java.util.concurrent.TimeUnit;import java.util.concurrent.atomic.AtomicInteger;/*** @Description* @Author* @Date 2015-5-8 上午9:37:45*/public class ConcurrentAtomicTest {private final static AtomicInteger atomicInteger=new AtomicInteger(1);private static volatile int integer=1;;/*** @Description TODO* @Return void* @Throws*/public static void main(String[] args) {// TODO Auto-generated method stub//testAtomicInteger();testInteger2();}public static void testAtomicInteger() {String time = new SimpleDateFormat("HH:mm:ss").format(new Date());System.out.println("Start time : " + time);int temp=atomicInteger.addAndGet(1);//addatomicInteger.get();//get currentSystem.out.print(temp+",");temp=atomicInteger.decrementAndGet();//Atomically decrements by one the current value.System.out.print(temp+",");temp=atomicInteger.getAndIncrement();//Atomically decrements by one the current value.System.out.print(temp+",");temp=atomicInteger.intValue();//Atomically decrements by one the current value.System.out.print(temp+",");atomicInteger.set(0);//Atomically decrements by one the current value.temp=atomicInteger.get();System.out.println(temp+",");//result:2,1,1,2,0,ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(5); // 创建5个执行线程Runnable runnable = new Runnable() {@Overridepublic void run() {String time = new SimpleDateFormat("HH:mm:ss").format(new Date());atomicInteger.incrementAndGet();System.out.println("Now Time : " + time+",integer:"+integer);}};executor.scheduleWithFixedDelay(runnable, 2, 3, TimeUnit.SECONDS);}/*** 测试int加1* @Description TODO* @Return void* @Throws*/public static void testInteger2() {String time = new SimpleDateFormat("HH:mm:ss").format(new Date());System.out.println("Start time : " + time);integer++;System.out.println("integer ++:"+integer);integer–;System.out.println("integer –:"+integer);ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(5); // 创建5个执行线程Runnable runnable = new Runnable() {@Overridepublic void run() {String time = new SimpleDateFormat("HH:mm:ss").format(new Date());integer=integer+1;System.out.println("Now Time : " + time+",testInteger2 Integer:"+atomicInteger.get());}};executor.scheduleWithFixedDelay(runnable, 2, 3, TimeUnit.SECONDS);}//Start time : 10:27:16//integer ++:2//integer –:1//Now Time : 10:27:18,testInteger2 Integer:1//Now Time : 10:27:21,testInteger2 Integer:1//Now Time : 10:27:24,testInteger2 Integer:1//Now Time : 10:27:27,testInteger2 Integer:1}

我不去想是否能够成功，既然选择了远方，便只顾风雨兼程！