多线程修改单一变量值
package org.fanzone.thread;
/**
* Title: base<br>
* Description: Thread Handler<br>
* Copyright: Copyright (c) 2011 <br>
* Create DateTime: Jun 14, 2011 3:06:51 PM <br>
* @author wangmeng
*/
public class ThreadHandle {
/**global variable*/
private int count;
public static void main(String[] args){
ThreadHandle th = new ThreadHandle();
/**the initials of the two inner classes*/
ThreadOne to = th.new ThreadOne();
ThreadTwo tt = th.new ThreadTwo();
Thread t = new Thread(to);
t.start();
t.setName("p");
t = new Thread(tt);
t.start();
t.setName("m");
}
/**
* synchronized method to superimposite
*/
private synchronized void plus(){
count++;
System.out.println(Thread.currentThread().getName()+" -- "+count);
}
/**
* synchronized method to descend
*/
private synchronized void minus(){
count--;
System.out.println(Thread.currentThread().getName()+" -- "+count);
}
/**
* Title: base<br>
* Description: A inner class which deal with the plus handler<br>
* Copyright: Copyright (c) 2011 <br>
* Create DateTime: Jun 14, 2011 3:09:40 PM <br>
* @author wangmeng
*/
class ThreadOne implements Runnable{
public void run(){
for(int i=0;i<100;i++){
plus();
}
}
}
/**
* Title: base<br>
* Description: A inner class which deal with the minus handler<br>
* Copyright: Copyright (c) 2011 <br>
* Create DateTime: Jun 14, 2011 3:09:40 PM <br>
* @author wangmeng
*/
class ThreadTwo implements Runnable{
public void run(){
for(int i=0;i<100;i++){
minus();
}
}
}
}
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