enum常用方法

package md5;

public class TestWeilai {
    public static void main(String[] args) {
        Season2 autumn = Season2.AUTUMN;
//        name()：返回当前对象名(常量名)，子类中不能重写
        System.out.println(autumn.name());
        System.out.println(autumn.getDesc());
//        ordinal()：返回当前对象的位置号，默认从0开始
        System.out.println(autumn.ordinal());
//        values()：返回当前枚举类中所有的常量对象
        Season2[] values = Season2.values();
        for (Season2 season : values) {
            System.out.println(season);
        }
//        valueOf()：将字符串转换成已有的枚举对象，要求字符串必须为已有的常量名，否则报异常！
        Season2 autumn1 = Season2.valueOf("AUTUMN");
        System.out.println("season1=" + autumn1);
        System.out.println(autumn == autumn1);
//        compareTo()：比较两个枚举常量的大小(编号),返回的结果是两个枚举常量的编号相减得到的数
        System.out.println(Season2.AUTUMN.compareTo(Season2.SUMMER));//4-3=1
    }
}

enum Season2 {
    SPRING("春天", "温暖"), SUMMER("夏天", "炎热"), AUTUMN("秋天", "凉爽"), WINTER("冬天", "寒冷");

    private String name;
    private String desc;

    private Season2(String name, String desc) {
        this.name = name;
        this.desc = desc;
    }

    public String getName() {
        return name;
    }

    public String getDesc() {
        return desc;
    }

    //    toString()：Enum类已经重写过了，返回的是当前对象名；子类可以重写该方法，用于返回对象的属性信息
    @Override
    public String toString() {
        return "Season{" +
                "name='" + name + '\'' +
                ", desc='" + desc + '\'' +
                '}';
    }
}