Rhythmk 一步一步学 JAVA (20) JAVA enum常用方法

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package
com.rhythmk.filedemo;

import java.util.Scanner;

public class enum_demo {

    public
static void main(String[] args) {

        System.out.println("------------------------1-----------------------------");

        //1、获取枚举对象所有枚举类型

       Size[] sizeArr=Size.values();

       for
(Size size : sizeArr) {

              System.out.println(size.toString());

        }

        System.out.println("------------------------2-----------------------------");

           // 2、通过 Enum 的 Indexof(EnumType,name) 返回于name同名的枚举属性

       Scanner sc=new
Scanner(System.in);

       System.out.println("请输入Size属性[SMALL,BIG,LARGE]");

       String sInput=sc.next();

       Size smallSize=Size.SMALL;

       Size eInput=Size.valueOf(Size.class,sInput);

       if(eInput==smallSize)

       {

           System.out.println("True,‘枚举对象为:‘"+eInput);

       }else

       {

           System.out.println("False");

       }

        System.out.println("------------------------3-----------------------------");

       // 3、调用枚举定义方法

       String sizeShow=Size.SMALL.Show();

       System.out.println(sizeShow);

      Size bigLarge= Size.BIGLARGE;

      System.out.println("------------------------4-----------------------------");

      // 4、调用枚举自定义方法

       String sblogsShow=Blog.RHYTHMK.Show();

       System.out.println(sblogsShow);

    }

}

enum Size

{

    SMALL,

    BIG,

    LARGE,

    BIGLARGE("BIGLARGE");

    private
Size()

    {}

    private
Size(String str)

    {

        System.out.println("Size被创建，传入值为:"+str);

    }

    public
String Show()

    {

       return
"调用枚举定义方法回传值";   

    }

}

enum Blog

{

   CNBLOGS("博客园"),

   CSDN("CSDN博客"),

   RHYTHMK("本博客");

   private
Blog(String str)

   {

       this._show=str;

   }

   private
String _show;

   private
String getShow()

   {

       return
_show;

   }

   public
String Show()

   {

       return
"当前选择博客为:"+getShow();

   }

}