JAVA观察者模式

JAVA 语言实现观察者模式

import java.util.Observable;


public class Dota extends Observable {
	
	int heroNumber;
	String version;
	public int getHeroNumber() {
		return heroNumber;
	}
	public void setHeroNumber(int heroNumber) {
		this.heroNumber = heroNumber;
	}
	public String getVersion() {
		return version;
	}
	public void setVersion(String version) {
		this.version = version;
	}
	public void releaseNewVersion(){
		setChanged();
		notifyObservers();
	}
	
}

import java.util.Observable;
import java.util.Observer;

/**
 * @author TsayQ~
 *
 */
public class Tanshuai implements Observer {
	
	public Tanshuai(Observable observable){
		observable.addObserver(this);
	}

	/* (non-Javadoc)
	 * @see java.util.Observer#update(java.util.Observable, java.lang.Object)
	 */
	@Override
	public void update(Observable arg0, Object arg1) {
		// TODO Auto-generated method stub
		System.out.print("我是谭帅,Dota版本更新了，我获取了通知~");
	}
}

import java.util.Observable;
import java.util.Observer;

/**
 * @author TsayQ~
 *
 */
public class Songzipeng implements Observer {
	
	
	public Songzipeng(Observable observable){
		observable.addObserver(this);
	}

	/* (non-Javadoc)
	 * @see java.util.Observer#update(java.util.Observable, java.lang.Object)
	 */
	@Override
	public void update(Observable o, Object arg) {
		// TODO Auto-generated method stub

		System.out.println("我是宋子鹏，我也获取了Dota版本更新~");
	}

}

/**
 * @author TsayQ~
 *
 */
public class Test {
	
	
	public static void main(String[] args){
		
		Dota dota = new Dota();
		new Songzipeng(dota);
		new Tanshuai(dota);
		System.out.println("发布新版本了~");
		dota.releaseNewVersion();
		System.out.println("exit");
	}

}