Here you can find the source of convertListToString(List
public static String[] convertListToString(List<String> valueList)
//package com.java2s; /*// ww w .j ava2s . co m * Copyright 2015 Samsung Electronics All Rights Reserved. * * 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.List; public class Main { public static String[] convertListToString(List<String> valueList) { String[] strArr; if (null != valueList && valueList.size() > 0) { strArr = valueList.toArray(new String[1]); } else { strArr = new String[1]; } return strArr; } }