Java tutorial
/* * Copyright 2014 Dan Haywood * * Licensed under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.isisaddons.app.kitchensink.dom.dependent; import java.util.Arrays; import java.util.List; import com.google.common.base.Predicate; import com.google.common.collect.Iterables; import com.google.common.collect.Lists; public enum NflRegion { AFC_NORTH(NflLeague.AFC, "North"), AFC_EAST(NflLeague.AFC, "East"), AFC_SOUTH(NflLeague.AFC, "South"), AFC_WEST( NflLeague.AFC, "West"), NFC_NORTH(NflLeague.NFC, "North"), NFC_EAST(NflLeague.NFC, "East"), NFC_SOUTH(NflLeague.NFC, "South"), NFC_WEST(NflLeague.NFC, "West"); private final NflLeague league; private final String region; NflRegion(NflLeague league, String region) { this.league = league; this.region = region; } public NflLeague getLeague() { return league; } public String getRegion() { return region; } public static List<NflRegion> thoseFor(final NflLeague league) { return Lists.newArrayList(Iterables.filter(Arrays.asList(values()), new Predicate<NflRegion>() { @Override public boolean apply(NflRegion input) { return input.getLeague() == league; } })); } }