synchronized 同步代码块，售票问题
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package cn.ljs.FristSync;
public class SalerDemo extends Thread {
static int tickets = 1000;
String name;
static Object lock = new Object();
public SalerDemo(String name) {
this.name = name;
}
public void run(){
while(true){
synchronized (lock) {
if (tickets < 1) {
return ;
}
System.out.println(name + ": " + tickets);
tickets--;
}
}
}
public static void main(String[] args) {
Thread t1 = new SalerDemo("saler1");
Thread t2 = new SalerDemo("saler2");
Thread t3 = new SalerDemo("saler3");
t1.start();
t2.start();
t3.start();
}
}
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