java 线程数据同步 由买票实例 //java线程实例 //线程数据同步 //卖票问题 //避免重复卖票 //线程 class xc1 implements Runnable{ //定义为静态,可以使多个对象使用同一个数据 public static int chepiao = 10; //车票总数 public static String aa = new String("123"); //字符串随意定义,定义在函数上面 public void run(){ while(true)
一,背景 近期需要用到ActiveMQ接收Oozie执行作业之后的返回结果.Oozie作为消息的生产者,将消息发送给ActiveMQ,然后Client可以异步去ActiveMQ取消息. ActiveMQ作为基于 JMS 开源的Apache Message Provider,故记录下JMS相关基础知识. 二,基础知识&基本概念 1)面向消息的中间件 Message-oriented middleware (MOM) is best described as a category of softwa
en.wikipedia.org/wiki/Java_Message_Service Messaging is a form of loosely coupled distributed communication, where in this context the term 'communication' can be understood as an exchange of messages between software components. Message-oriented tec