java-多线程3

package test;

public class Test01{
public static void main(String[] args) {
MyRunnable mr=new MyRunnable();
Thread t1=new Thread(mr,"窗口1");
Thread t2=new Thread(mr,"窗口2");
Thread t3=new Thread(mr,"窗口3");

t1.start();
t2.start();
t3.start();
}
}

package test;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/*
* 接口：Lock:  void lock()   ;   void  unlock()
* Lock的实现类：ReentrantLock
* */

public class MyRunnable implements Runnable{
private int t=100;
private Lock lock=new ReentrantLock();

@Override
public void run() {
// TODO Auto-generated method stub
while(true){
try{
//加锁
lock.lock();
if(t>0){
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName()+"正在出售第"+(t--)+"张票");
}
}finally{
//解锁
lock.unlock();
}
}
}
}