Java Data Type - 如何在交换机中使用枚举

enum Color {
  BLUE, RED, YELLOW
};

public class Main {
  public static void main(String[] args) {
    Color c = Color.BLUE;
    switch (c) {
    case BLUE:
      System.out.println("Blue!");
      break;
    case RED:
      System.out.println("Red!");
      break;
    case YELLOW:
      System.out.println("Yellow!");
      break;
    default:
      System.out.println("Logic error!");
    }
  }
}