public class Enumeration02 {
    public static void main(String[] args) {
        System.out.println(Season2.AUTUMN);
        System.out.println(Season2.SUMMER);
        Enum
    }
}
//演示使用enum關(guān)鍵字來實(shí)現(xiàn)枚舉類
enum Season2{ //類
    //定義了四個(gè)對(duì)象
//    public static final Season SPRING = new Season("春天", "溫暖");
//    public static final Season SUMMER = new Season("夏天", "炎熱");
//    public static final Season AUTUMN = new Season("秋天", "涼爽");
//    public static final Season WINNER = new Season("冬天", "寒冷");
    //如果使用enum來實(shí)現(xiàn)枚舉類
    //1.使用關(guān)鍵字enum替代class
    //2.原先public static final Season SPRING = new Season("春天", "溫暖")直接使用
    //  SPRING("春天", "溫暖")代替  解讀：常量名(實(shí)參列表)
    //3.如果有多個(gè)常量(對(duì)象)，使用 , 間隔即可
    //4.如果使用enum來實(shí)現(xiàn)枚舉，要求將定義的常量對(duì)象寫在最前面
    SPRING("春天", "溫暖"),SUMMER("夏天", "炎熱"),
    AUTUMN("秋天", "涼爽"),WINNER("冬天", "寒冷");
    private String name;
    private String desc; //描述
    private Season2(String name, String desc) {
        this.name = name;
        this.desc = desc;
    }
    public String getName() {
        return name;
    }
    public String getDesc() {
        return desc;
    }
    @Override
    public String toString() {
        return "Season{" +
                "name='" + name + '\'' +
                ", desc='" + desc + '\'' +
                '}';
    }
}

/*
    演示Enum類的各種方法的使用
*/
public class EnumMethod {
    public static void main(String[] args) {
        //使用Season2枚舉類，來演示各種方法
        Season2 autumn = Season2.AUTUMN;
        //1.輸出枚舉對(duì)象的名字
        System.out.println(autumn.name());
        //2.ordinal()輸出的是該枚舉對(duì)象的次序(編號(hào))，從0開始編號(hào)
        //AUTUMN枚舉對(duì)象是第三個(gè)，因此輸出2
        System.out.println(autumn.ordinal());
        //3.從反編譯可以看出values方法,返回的是Season2[],該數(shù)組含有定義的所有枚舉對(duì)象
        Season2[] values = Season2.values();
        //遍歷取出枚舉對(duì)象
        for(Season2 season: values){ //增強(qiáng)for循環(huán)
            System.out.println(season);
        }
        //4.valueOf：將字符串轉(zhuǎn)換成枚舉對(duì)象，要求字符串必須為已有的常量名，否則報(bào)異常
        //執(zhí)行流程
        //1.根據(jù)輸入的"AUTUMN"到Season2的枚舉對(duì)象去查找
        //2.如果找到了就返回，如果沒有找到就報(bào)錯(cuò)
        Season2 autumn1 = Season2.valueOf("AUTUMN");
        System.out.println("autumn1" + autumn1);
        System.out.println(autumn == autumn1);
        //5.compareTo:比較兩個(gè)枚舉常量，比較的就是編號(hào)
        //解讀
        //1.就是把Season2.AUTUMN枚舉對(duì)象的編號(hào) 和 Season2.SUMMER枚舉對(duì)象的編號(hào)進(jìn)行比較
        //2.就是Season2.AUTUMN的編號(hào) - Season2.SUMMER的編號(hào)
        /*
             public final int compareTo(E o) {
                return self.ordinal - other.ordinal;
             }
        */
        System.out.println(Season2.AUTUMN.compareTo(Season2.SUMMER));
//        //補(bǔ)充了一個(gè)增強(qiáng)for循環(huán)
//        int[] nums = {1, 2, 5, 9};
//        //普通的for循環(huán)
//        System.out.println("=======普通for循環(huán)========");
//        for (int i = 0; i < nums.length; i++) {
//            System.out.println(nums[i]);
//        }
//        System.out.println("=======增強(qiáng)for循環(huán)========");
//        //增強(qiáng)for循環(huán)
//        //執(zhí)行流程是依次從nums數(shù)組中取出數(shù)據(jù)賦給i，如果取出完畢就退出for循環(huán)
//        for (int i :nums){
//            System.out.println("i=" + i);
//        }
    }
}

enum  類名 implements 接口1，接口2 {  }