Java tutorial
//package com.java2s; /* * Created 2006/11/24 * Copyright (C) 2003-2009 Naoki Iwami (naoki@limy.org) * * This file is part of Limy Eclipse Plugin. * * Limy Eclipse Plugin is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Limy Eclipse Plugin is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Limy Eclipse Plugin. If not, see <http://www.gnu.org/licenses/>. */ import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; public class Main { private static void addEntry(Map<String, Object> value, Entry<String, Object> entry) { String entryKey = entry.getKey(); if (value.get(createMultipleName(entryKey)) != null) { List<Object> orgList = (List) value.get(createMultipleName(entryKey)); orgList.add(entry.getValue()); } else { Object orgValue = value.get(entryKey); if (orgValue == null) { value.put(entryKey, entry.getValue()); } else if (orgValue instanceof List) { ((List) orgValue).add(entry.getValue()); } else { List<Object> newList = new ArrayList<Object>(); newList.add(orgValue); newList.add(entry.getValue()); Map<String, Object> newMap = new HashMap<String, Object>(); newMap.put(createMultipleName(entryKey), newList); value.remove(entryKey); value.put(createMultipleName(entryKey), newList); } } } private static String createMultipleName(String name) { return name + "s"; } }