Java enum，javaenum

Java enum，javaenum

 

 1 /** 2  * Created by Edward on 2016/6/30. 3  */ 4 public class TestEnum { 5  6     //方法一 7     public enum SexEnum{ 8         MALE,FEMALE; 9     }10 11     //方法二12     public enum SexEnum1{13         MALE(1),14         FEMALE(2);15 16         private int id;17 18         //私人建構函式19         private SexEnum1(int id)20         {21             this.id=id;22         }23 24         //擷取值對應的enum對象25         public static SexEnum1 getEnum(int id)26         {27             for(SexEnum1 s : SexEnum1.values())28             {29                 if(s.id == id)30                 return s;31             }32             return null;33         }34     }35 36 37     public static void main(String[] argv)38     {39         //列出enum的name40         for(SexEnum sex : SexEnum.values())41             System.out.println(sex.name());42 43         //通過 ENUM 訪問44         SexEnum sex = SexEnum.MALE;45         switch(sex)46         {47             case MALE:48                 System.out.println("男性");49                 break;50             case FEMALE:51                 System.out.println("女性");52                 break;53             default:54                 System.out.println("其他");55                 break;56         }57 58         //通過值擷取 enum對象59         SexEnum1 s = SexEnum1.getEnum(3);60         switch(s)61         {62             case MALE:63                 System.out.println("男");64                 break;65             case FEMALE:66                 System.out.println("女");67                 break;68             default:69                 System.out.println("其他");70                 break;71         }72 73     }74 }