Java tutorial
//package com.java2s; /* * #%L * Hot * %% * Copyright (C) 2010 - 2016 Solidx * %% * This program 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. * * This program 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 this program. If not, see * <http://www.gnu.org/licenses/gpl-3.0.html>. * #L% */ import java.util.LinkedHashMap; import java.util.Map; import com.google.common.collect.Multimap; public class Main { public static Map<String, Object> flat(Multimap<String, Object> multimap) { Map<String, Object> flattenMap = new LinkedHashMap<String, Object>(); for (String key : multimap.keySet()) { int i = 0; for (Object object : multimap.get(key)) { flattenMap.put(key.replaceAll("\\.", "_") + "_" + i++, object); } } return flattenMap; } }