Here you can find the source of mapToStringArray(Map
static String[] mapToStringArray(Map<String, String> map)
//package com.java2s; /*/*w w w .j a va2 s .c o m*/ * Copyright 2014 Intel Corporation. * * 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. */ import java.util.Map; public class Main { static String[] mapToStringArray(Map<String, String> map) { final String[] strings = new String[map.size()]; int i = 0; for (Map.Entry<String, String> e : map.entrySet()) { strings[i] = e.getKey() + '=' + e.getValue(); i++; } return strings; } }