AtomicInteger

Test:

package cn.eshore.dataCenter.test;

public class Test2 {
	public static void main(String[] args) {
		Test3 test3=new Test3();
		Thread t1 = new Thread(test3);
		t1.start();
		Thread t2 = new Thread(test3);
		t2.start();
	}
}

Test3:

package cn.eshore.dataCenter.test;

import java.util.concurrent.atomic.AtomicInteger;

public class Test3 implements Runnable{
	private static AtomicInteger count = new AtomicInteger(0);
	public void increase() {
		Thread th=Thread.currentThread();
		//System.out.println("Tread name:"+th.getName()+",before:"+count);
		count.incrementAndGet();
		System.out.println("Tread name:"+th.getName()+",after:"+count);
	}

	@Override
	public void run() {
		for(int i=0;i<5;i++) {
			this.increase();
		}
		
	}
	

}

　　

　结果：

Tread name:Thread-0,after:1
Tread name:Thread-1,after:2
Tread name:Thread-0,after:3
Tread name:Thread-0,after:5
Tread name:Thread-1,after:5
Tread name:Thread-1,after:7
Tread name:Thread-1,after:8
Tread name:Thread-1,after:9
Tread name:Thread-0,after:7
Tread name:Thread-0,after:10