软件工程

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Java

FlyweightFactory.java：源码内容

							package com.company.section3;
import java.util.HashMap;
/**
 * @author cbf4Life cbf4life@126.com
 * I'm glad to share my knowledge with you all.
 */
public class FlyweightFactory {
	//定义一个池容器
	private static  HashMap<String,Flyweight> pool= new HashMap<String,Flyweight>();
	
	//享元工厂
	public static Flyweight getFlyweight(String Extrinsic){
		//需要返回的对象
		Flyweight flyweight = null;
		//在池中没有改对象
		if(pool.containsKey(Extrinsic)){
			flyweight = pool.get(Extrinsic);
		}else{
			//根据外部状态创建享元对象
			flyweight = new ConcreteFlyweight1(Extrinsic);
			//放置到池中
			pool.put(Extrinsic, flyweight);
		}
		
		return flyweight;
	}
}

						