枚举类的说明

1. 枚举类的说明：

• 枚举类的理解：类的对象只有有限个，确定的。
• 当需要定义一组常量时，强烈建议使用枚举类。
• 如果枚举类中只有一个对象，则可以作为单例模式的实现方式。

public class SeasonTest {

    public static void main(String[] args) {
        Season spring = Season.SPRING;
        System.out.println(spring);

    }

}
//自定义枚举类
class Season{
    //1.声明Season对象的属性:private final修饰
    private final String seasonName;
    private final String seasonDesc;

    //2.私有化类的构造器,并给对象属性赋值
    private Season(String seasonName,String seasonDesc){
        this.seasonName = seasonName;
        this.seasonDesc = seasonDesc;
    }

    //3.提供当前枚举类的多个对象：public static final的
    public static final Season SPRING = new Season("春天","春暖花开");
    public static final Season SUMMER = new Season("夏天","夏日炎炎");
    public static final Season AUTUMN = new Season("秋天","秋高气爽");
    public static final Season WINTER = new Season("冬天","冰天雪地");

    //4.其他诉求1：获取枚举类对象的属性
    public String getSeasonName() {
        return seasonName;
    }

    public String getSeasonDesc() {
        return seasonDesc;
    }
    //4.其他诉求1：提供toString()
    @Override
    public String toString() {
        return "Season{" +
                "seasonName='" + seasonName + '\'' +
                ", seasonDesc='" + seasonDesc + '\'' +
                '}';
    }
}

Season{seasonName='春天', seasonDesc='春暖花开'}