摘要：
1.需求：生产者生产奶=》奶箱=》消费者消费 2.帮助类 1）BOX（奶箱） package shapes; public class Box{ private int milk; private boolean state = false; public synchronized void put 阅读全文
摘要：
1.案例1 1）调用类（lock） package shapes; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; public class SellTicket imp 阅读全文