优秀的设计模式示例－观察者模式

package com; import java.io.FileInputStream; import java.util.Properties; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.frank.observer.service.ISender; import com.frank.observer.service.ISubject; public class MainClass { /** * @param args */ public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); ISubject subject = (ISubject)context.getBean("subject"); Properties prop = new Properties(); try { prop.load(new FileInputStream("src/motor.properties")); } catch (Exception e) { return; } int cnt = Integer.valueOf((String)prop.get("cnt")); for(int i = 1;i<=cnt;i++) subject.addSender((ISender)context.getBean("motor" + i)); //测试方法，正常应用过程中，应该是根据数据的变更改而自动通知的 subject.notifySenders(); } }