如何在开关盒中使用枚举

我正在尝试检查VO中设置了哪些值。

以下是我的故事。我收到“ 合格案例标签MyEnum.UserType.DOCTORS必须替换为不合格枚举常量DOCTORS ”

请帮助我确定我在做什么错。

MyEnum.java

public MyEnum{
    private UserType userType;

    public UserType getUserType(){
        return userType;
    }

    public void setUserType(UserType userType){
        this.userType = userType;
    }

    public static enum UserType{
        DOCTORS("D"),
        PATIENT("P"),
        STAFF("S");
    }

}

EnumTest.java

public EnumTest {

    .....
    public void onGoBack(MyEnum myEnum) {

        switch(myEnum.getUserType())
        {
            case UserType.DOCTORS: // this shows "The qualified case label MyEnum.UserType.DOCTORS must be replaced with the unqualified enum constant DOCTORS"
                break;

        }
    }

}