1.十二生肖列舉類

public enum TwelveAnimalsEnum {
    //定義十二生肖對應的數字標示
    DOG_FLAG(1,"狗"),
    CHICKEN_FLAG(2,"雞"),
    MONKEY_FLAG(3,"猴"),
    SHEEP_FLAG(4,"羊"),
    HORSE_FLAG(5,"馬"),
    SNAKE_FLAG(6,"蛇"),
    LOONG_FLAG(7,"龍"),
    RABBIT_FLAG(8,"兔"),
    TIGER_FLAG(9,"虎"),
    CATTLE_FLAG(10,"牛"),
    RAT_FLAG(11,"鼠"),
    PIG_FLAG(12,"豬");

    private int key;
    private String desc;
    
    TwelveAnimalsEnum(int key, String desc) {
        this.key = key;
        this.desc = desc;
    }

    public int getKey() {
        return key;
    }

    public String getDesc() {
        return desc;
    }
    
    //可以根據key獲取對應生肖名稱
    public static String getDescByKey(int key){
        for (TwelveAnimalsEnum tEnum : TwelveAnimalsEnum.values()) {
            if (tEnum.getKey() == key) {
                return tEnum.getDesc();
            }
        }
        return DOG_FLAG.getDesc();
    }
    
    //根據生肖名稱獲取對應的key值
    public static int getKeyByDesc(String desc){
        for (TwelveAnimalsEnum tEnum : TwelveAnimalsEnum.values()) {
            if (tEnum.getDesc().equals(desc) ) {
                return tEnum.getKey();
            }
        }
        return DOG_FLAG.getKey();
    }
}