enum的java例子

Grade.java

 package com.zhiyuan.myenum;

 /**
  * <p>Title: 枚举类
  * <p>Company:
  * @description Enum
  * @author LIANG ZHIYUAN
  * @date 2016年4月7日下午11:38:25
  * @version 1.0
  */
 public enum Grade {

     // 枚举值
     //A("100-90"),B("89-75"),C("74-60"),D("59-0");

     A("100-90"){
         @Override
         public String localValue() {
             return "优";
         }
     },
     B("89-75"){
         @Override
         public String localValue(){
             return "良";
         }
     },
     C("74-60"){
         @Override
         public String localValue(){
             return "中";
         }
     },
     D("59-0"){
         @Override
         public String localValue(){
             return "差";
         }
     };

     /**
      * 成绩值
      */
     private String value;

     /**
      * 私有(必需)构造函数
      * @param value 传入的值
      */
     private Grade(String value){
         this.value=value;
     }

     /**
      * 得到值
      * @return 值
      */
     public String getValue(){
         return this.value;
     }

     /**
      * 得到值
      * @return 值
      */
     public abstract String localValue();

 }

GradeTest.java

 package com.zhiyuan.myenum.test;

 import org.junit.Test;

 import com.zhiyuan.myenum.Grade;

 public class GradeTest {

     public static void print(Grade grade){
         String value=grade.localValue();
         System.out.println(value);
     }

     @Test
     public void testGrade() {
         print(Grade.C);
     }

 }

---

Week.java

 package com.zhiyuan.myenum;

 /**
  * <p>Title: 枚举类
  * <p>Company:
  * @description Enum
  * @author LIANG ZHIYUAN
  * @date 2016年4月8日下午2:30:46
  * @version 1.0
  */
 public enum Week {
     // 枚举值
      Mon("Monday",1){
         @Override
         public String localValue() {
             return "星期一";
         }
      },
      Tue("Tuesday",2){
          @Override
         public String localValue() {
             return "星期二";
         }
      },
      Wed("Wednesday",3){
          @Override
         public String localValue() {
             return "星期三";
         }
      },
      Thu("Thursday",4){
          @Override
         public String localValue() {
             return "星期四";
         }
      },
      Fri("Friday",5){
          @Override
         public String localValue() {
             return "星期五";
         }
      },
      Sat("Saturday",6){
          @Override
         public String localValue() {
             return "星期六";
         }
      },
      Sun("Sunday",7){
          @Override
         public String localValue() {
             return "星期日";
         }
      };
      /**
      * 星期数
      */
     private String value;
      /**
      * 索引
      */
     private Integer index;
      private Week(String value,Integer index){
          this.value=value;
          this.index=index;
      }
      public String getValue(){
          return this.value+"_"+this.index;
      }
      public abstract String localValue();
      @Override
     public String toString() {
         return value+"_"+index;
     }
 }

WeekTest.java

 package com.zhiyuan.myenum.test;

 import org.junit.Test;

 import com.zhiyuan.myenum.Week;

 public class WeekTest {

     @Test
     public void testWeek() {
         print(Week.Sat);
         //loopPrint();
     }

     public void print(Week week) {
         //String value=week.getValue();
         String value=week.localValue();
         System.out.println(value);
     }

     public void loopPrint(){
         for(Week week:Week.values()){
             System.out.println(week.toString());
         }
     }

 }