转--秒杀多线程第四篇 一个经典的多线程同步问题（续）

demo in java：

package com.multithread.main.sampleExample;

import com.multithread.main.ExampleInterface;

public class SampleExample extends ExampleInterface{

final int MAX_THREAD_NUM = 10;
int g_num = 0;
@Override
public void startDemo() {
int i=0;
while(i<MAX_THREAD_NUM)
{
Thread t = new SampleMultiThread(i);
t.start();
i++;
}
}

class SampleMultiThread extends Thread{

int index = -1;
public SampleMultiThread(int index)
{
this.index = index;
}

@Override
public void run() {
// TODO Auto-generated method stub
g_num++;
System.out.println("g_num is:"+g_num +"\t"+"index is:"+this.index);
}

}

}

result：

g_num is:2 index is:0
g_num is:8 index is:6
g_num is:7 index is:9
g_num is:6 index is:7
g_num is:5 index is:5
g_num is:4 index is:3
g_num is:3 index is:2
g_num is:2 index is:1
g_num is:10 index is:8
g_num is:10 index is:4