深入了解枚举类型

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package All.D13.Enum_;

public enum PeopleEnum {
People_1,People_2,People_3,People_4
}
package All.D13.Enum_;

public class ShowPeopleEnum {
public static void main(String[] args) {
PeopleEnum p[] = PeopleEnum.values();

    for (int i = 0; i < p.length; i++) {
        System.out.println("枚举常量有:"+p[i]);

    }

}

}
枚举常量有:People_1
枚举常量有:People_2
枚举常量有:People_3
枚举常量有:People_4

在该方法中，values（）方法可以将枚举类型成员以数组的形式返回
package All.D13.Enum_;

public enum Constants {
Constants_1, Constants_2, Constants_3
}
package All.D13.Enum_;

public class Demon02 {
public static void main(String[] args) {
Constants enumArray[]=Constants.values();

    for (int i = 0; i < enumArray.length; i++) {
        System.out.println("枚举数组常量有："+enumArray[i]);

    }
}

}
枚举数组常量有：Constants_1
枚举数组常量有：Constants_2
枚举数组常量有：Constants_3