【Java】使用线程模拟卖票并解决安全问题
作者:互联网
SellTicket.java
package maipiao;
public class SellTicket implements Runnable {
private static int tickets = 100;
private Object obj = new Object();
private int x = 0;
@Override
public void run() {
while (true) {
if (x % 2 == 0) {
// 加锁操作
// synchronized (obj) {
// synchronized (this) {
// 静态方法
synchronized (SellTicket.class) {
if (tickets > 0) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + "正在出售第" + tickets + "张票");
tickets--;
}
}
} else {
sellTicket();
}
x++;
}
}
private static synchronized void sellTicket() {
if (tickets > 0) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + "正在出售第" + tickets + "张票");
tickets--;
}
}
}
SellTicketDemo.java
package maipiao;
public class SellTicketDemo {
public static void main(String[] args) {
SellTicket st=new SellTicket();
Thread t1=new Thread(st,"窗口1");
Thread t2=new Thread(st,"窗口2");
Thread t3=new Thread(st,"窗口3");
// 启动线程
t1.start();
t2.start();
t3.start();
}
}
标签:tickets,Java,synchronized,Thread,卖票,private,SellTicket,线程,new 来源: https://www.cnblogs.com/HGNET/p/16204378.html