问题遇到的现象和发生背景
Java入门案例问题
问题相关代码,请勿粘贴截图
public class SellTicket implements Runnable{
private int tickets = 100;
private Object obj = new Object();
@Override
public void run() {
while (true) {
synchronized (obj) {
if (tickets > 0) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + "正在卖第" + (101 - tickets) + "张票");
tickets--;
/*} else {
System.out.println("票卖光了");
break;*/
}
}
}
}
}
public class SellTicketDemo {
public static void main(String[] args) {
SellTicket st = new SellTicket();
Thread a = new Thread(st,"窗口1");
Thread b= new Thread(st,"窗口2");
Thread c = new Thread(st,"窗口3");
System.out.println(a.getPriority());
System.out.println(b.getPriority());
System.out.println(c.getPriority());
a.start();
b.start();
c.start();
运行结果及报错内容
运行结果是 只有窗口一在卖票
我的解答思路和尝试过的方法
我把其他的窗口优先级提高过,但是依旧是窗口一一直在卖票
我想要达到的结果
窗口一和其他窗口都在卖票