Java程式測試之線程的同步

標籤：

package tickect;class ticketnum implements Runnable{    public int tickets = 100;    String str = new String();    public void run()    {        while(true)        {            synchronized(str)            {                if (tickets>0)                {                    System.out.printf("The Thread: %s is selling the %dth ticket!\n",Thread.currentThread().getName(),tickets);                    --tickets;                    try                    {                        Thread.sleep(20);                    }                    catch(Exception e)                    {}                }                else                {                    break;                }            }        }    }    }public class Tickect_test {    public static void main(String [] args)    {        ticketnum ticketNum = new ticketnum();        Thread sellThread1 = new Thread (ticketNum);        Thread sellThread2 = new Thread (ticketNum);        sellThread1.start();        sellThread2.start();    }}

 

Java程式測試之線程的同步