Java-马士兵设计模式学习笔记-观察者模式-OOD 封装event

把小孩醒来时的具体情况封装成事件类

Test.java

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class WakenUpEvent{           private long time;     private String location;     private Child source;           public WakenUpEvent(long time, String location, Child source) {         super();         this.time = time;         this.location = location;         this.source = source;     }       public long getTime() {         return time;     }       public void setTime(long time) {         this.time = time;     }       public String getLocation() {         return location;     }       public void setLocation(String location) {         this.location = location;     }       public Child getSource() {         return source;     }       public void setSource(Child source) {         this.source = source;     }             }   class Child implements Runnable {           private Dad dad;           public Child(Dad dad) {         this.dad = dad;     }       public void wakeUp(){         dad.actionToWakenUp(new WakenUpEvent(System.currentTimeMillis(), "bed", this));     }       @Override     public void run() {         try {             Thread.sleep(3000);         } catch (Exception e) {             e.printStackTrace();         }         wakeUp();     } }   class Dad {       public void actionToWakenUp(WakenUpEvent e) {         System.out.println(e.getTime());         System.out.println(e.getLocation());         System.out.println(e.getSource());         System.out.println("Fedd the child");     }       }   public class Test {       public static void main(String[] args) {         Dad d = new Dad();         Child c = new Child(d);         new Thread(c).start();     } }

　　

运行结果：