Java Enum(获得特定值之一)

public class Test14 {    public enum myColor {red,blue,yello};    public enum openDoor{me,myWife};    public static void main(String[] args)    {        myColor m = myColor.red;        switch (m) {        case red:                System.out.println(m);            break;        case blue:                System.out.println(m);            break;        case yello:                System.out.println(m);            break;        default:            break;        }    }}