監聽機制Observers模式

package com.zhijun.test;

import java.util.ArrayList;
import java.util.List;

class WakenupEvent {
	private long time;
	private String location;
	private Object source;
	public WakenupEvent(long time, String location, Object 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 Object getSource() {
		return source;
	}
	public void setSource(Object source) {
		this.source = source;
	}
	
	
}

class Dad implements WakenUpListener {
	public void ActionToWankenUp(WakenupEvent wakenupEvent) {
		// TODO Auto-generated method stub
		System.out.println("feed child");
	}
	
}

class GrandFather implements WakenUpListener {
	public void ActionToWankenUp(WakenupEvent wakenupEvent) {
		// TODO Auto-generated method stub
		System.out.println("hug child");
	}
	
}

interface WakenUpListener {
	public void ActionToWankenUp(WakenupEvent wakenupEvent);
}

class Child implements Runnable{
	private List<WakenUpListener> wakenUpListeners = new ArrayList<WakenUpListener>();
	private boolean wakenup = false;
	
	public void addWakenUpListener(WakenUpListener l) {
		wakenUpListeners.add(l);
	}
	
	void wakeup() {
		wakenup = true;
		for(int i=0; i<wakenUpListeners.size(); i++) {
			WakenUpListener l = wakenUpListeners.get(i);
			l.ActionToWankenUp(new WakenupEvent(System.currentTimeMillis(), "bed" , this));
		}
	}
	
	public boolean isWakenup() {
		return wakenup;
	}

	public void setWakenup(boolean wakenup) {
		this.wakenup = wakenup;
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		try {
			Thread.sleep(5000);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		this.wakeup();
	}		
	
}

public class Test1 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Child c = new Child();
		Dad d = new Dad();
		GrandFather gf = new GrandFather();
		c.addWakenUpListener(d);
		c.addWakenUpListener(gf);
		new Thread(c).start();
	}

}