Java多线程安全
来源：程序员人生 发布时间：2015-04-20 07:58:31 阅读次数：3221次
package SwingExample;
public class MultiThreadSafe implements Runnable{
private int nTicketCount = 10; // 剩余火车票数量
private String strPurchaserName; // 购票人姓名
public static void main(String[] args) {
// TODO Auto-generated method stub
MultiThreadSafe t = new MultiThreadSafe("man");
t.buyTickets();
}
public void buyTickets() {
// 假定最多支持5个人同时购票
MultiThreadSafe man1 = new MultiThreadSafe("man1");
MultiThreadSafe man2 = new MultiThreadSafe("man2");
MultiThreadSafe man3 = new MultiThreadSafe("man3");
MultiThreadSafe man4 = new MultiThreadSafe("man4");
MultiThreadSafe man5 = new MultiThreadSafe("man5");
Thread t1 = new Thread(man1);
Thread t2 = new Thread(man2);
Thread t3 = new Thread(man3);
Thread t4 = new Thread(man4);
Thread t5 = new Thread(man5);
t1.start();
t2.start();
t3.start();
t4.start();
t5.start();
}
public MultiThreadSafe(String strPurchaserName) {
// TODO Auto-generated constructor stub
this.strPurchaserName = strPurchaserName;
}
@Override
public void run() {
// TODO Auto-generated method stub
while (nTicketCount > 0) {
synchronized("") { // 多线程同步
nTicketCount--;
if (nTicketCount == 0) {
System.out.println(this.strPurchaserName + "前来购票，但票已售完！");
}
else if (nTicketCount > 0) {
System.out.println(this.strPurchaserName + "前来购票，当前余票：" + nTicketCount);
}
else {
System.out.println("余票管理系统异常，请联系系统管理员。");
}
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
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