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/**

* Description:

* <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>

* <br/>Copyright (C), 2001-2012, Yeeku.H.Lee

* <br/>This program is protected by copyright laws.

* <br/>Program Name:

* <br/>Date:

* @author Yeeku.H.Lee kongyeeku@163.com

* @version 1.0

*/

public class Season

{

//把Season类定义成不可变的，将其Field也定义成final

private final String name;

private final String desc;

public static final Season SPRING

= new Season("春天" , "趁春踏青");

public static final Season SUMMER

= new Season("夏天" , "夏日炎炎");

public static final Season FALL

= new Season("秋天" , "秋高气爽");

public static final Season WINTER

= new Season("冬天" , "围炉赏雪");

public static Season getSeason(int seasonNum)

{

switch(seasonNum)

{

case 1 :

return SPRING;

case 2 :

return SUMMER;

case 3 :

return FALL;

case 4 :

return WINTER;

default :

return null;

}

}

//将构造器定义成private访问权限

private Season(String name , String desc)

{

this.name = name;

this.desc = desc;

}

//只为name和desc提供getter方法

public String getName()

{

return this.name;

}

public String getDesc()

{

return this.desc;

}

}