package com.baeldung.controller; import com.baeldung.spring.AppConfig.Role; import java.util.HashMap; import java.util.Map; public class View { public static final Map MAPPING = new HashMap<>(); static { MAPPING.put(Role.ROLE_ADMIN, Admin.class); MAPPING.put(Role.ROLE_USER, User.class); } public static class User { } public static class Admin extends User { } }