java Lock接口
java.util.concurrent.locks
接口Lock
public interface Loce
Loce实现提供了比使用synchronized方法和语句可获得的更广泛的锁定操作
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class IntegerDemo {
public static void main(String[] args) {
// 创建3个线程对象
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();
}
}
class SellTicket implements Runnable {
private int ticket = 100;
private Lock lock = new ReentrantLock();
public void run() {
while (true) {
lock.lock();
if (ticket > 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" + (ticket--) + "张票。");
}
lock.unlock();
}
}
}
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