## values 以数组形式返回枚举类型的所有成员. ~~~ enum Color{ RED,BLACK,BLUE,GREEN; } public static void main(String[] args) { System.out.println(Arrays.toString(Color.values())); } ~~~ ## valueOf 将普通字符串转换为枚举实例. ~~~ enum Color{ RED,BLACK,BLUE,GREEN; } public static void main(String[] args) { Color red = Color.valueOf("RED"); //获取枚举的实例 } ~~~ ## ordinal 获取枚举成员的索引位置. ~~~ enum Color { RED, BLACK, BLUE, GREEN; } public static void main(String[] args) { Color red = Color.valueOf("BLACK"); System.out.println(red.ordinal()); } ~~~