package com.example.bootdocker.service;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class LockDemo implements Runnable{
private int tickNum = 100;
//true 为公平锁
private Lock lock = new ReentrantLock(true);
@Override
public void run() {
while (true){
lock.lock();
try {
if(tickNum>0){
try {
Thread.sleep(100);
}catch (Exception e){
}
System.out.println(Thread.currentThread().getName()+"卖掉了弟"+tickNum--+"张票");
}
}finally {
lock.unlock();
}
}
}
public static void main(String[] args) {
LockDemo demo = new LockDemo();
Thread t1 = new Thread(demo,"1窗口");
Thread t2 = new Thread(demo,"2窗口");
Thread t3 = new Thread(demo,"3窗口");
t1.start();
t2.start();
t3.start();
}
}
使用锁