枚举

public class EnumTest {
     enum Enum {
        //定义常量
        spring(1,"春天好呀"),
        summer(2,"夏天贼热"),
        autumn(3,"秋天凉爽"),
        winer(4,"冬天冻死");
        
        private final int code;
        private final String desc;


        Enum(int code,String desc){
            this.code = code;
            this.desc = desc;
        }

        public int getCode(){
            return code;
        }
        public String getDesc(){
            return desc;
        }
    }
     
     public static void main(String[] args) {
         
        System.out.println("序号"+Enum.spring.getCode()+"  描述:" + Enum.spring.getDesc());
        System.out.println("序号"+Enum.summer.getCode()+"  描述:" + Enum.summer.getDesc());
        System.out.println("序号"+Enum.autumn.getCode()+"  描述:" + Enum.autumn.getDesc());
        System.out.println("序号"+Enum.winer.getCode()+"  描述:" + Enum.winer.getDesc());
    }
     
}

枚举类型是指由一组固定的常量组成合法的类型，由 enum 关键字来定义一个枚举类型。