享元模式实例网站分类

package Xiangyuanmoshi;

public abstract class Website {
public abstract void Use(User user);
}
package Xiangyuanmoshi;

public class ConcretWebsite extends Website{
private String name="";
public ConcretWebsite(String name)
{this.name=name;
}

@Override
public void Use(User user) {
	System.out.println("网站分类"+name+"用户"+user.getName());
	
}

}
package Xiangyuanmoshi;

import java.util.Hashtable;

public class WebsiteFactory {
private Hashtable<String,Website> flyweights=new Hashtable<String,Website>();
public Website GetWebsiteCateGory(String key)
{if(!flyweights.contains(key))
	flyweights.put(key,new ConcretWebsite(key));
return flyweights.get(key);
}
public int getNum()
{return flyweights.size();
}
}
package Xiangyuanmoshi;

public class User {
private String name;

public User(String name) {
	
	this.name = name;
}

public String getName() {
	return name;
}

public void setName(String name) {
	this.name = name;
}

}
package Xiangyuanmoshi;

public class Test {
public static void main(String args[])
{WebsiteFactory f=new WebsiteFactory();
Website fx=f.GetWebsiteCateGory("产品展示");
fx.Use(new User("小菜"));
Website fy=f.GetWebsiteCateGory("产品展示");
fy.Use(new User("大鸟"));
Website fz=f.GetWebsiteCateGory("产品展示");
fz.Use(new User("娇娇"));
Website fl=f.GetWebsiteCateGory("博客");
fl.Use(new User("小鱼儿"));
Website fm=f.GetWebsiteCateGory("博客");
fl.Use(new User("花无缺"));
Website fn=f.GetWebsiteCateGory("企业招聘");
fn.Use(new User("灭绝师太"));
System.out.println("得到网站数目"+f.getNum());
}
}