Here you can find the source of asStringList(Collection> objects)
public static List<String> asStringList(Collection<?> objects)
//package com.java2s; /*-------------------------------------------------------------------------+ | | | Copyright 2005-2011 The ConQAT Project | | | | 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.ArrayList; import java.util.Collection; import java.util.List; public class Main { /**//from w w w . j av a2 s . com * Returns a list containing the string representations of the given * collection of objects. {@link String#valueOf} is used to convert each * object. <em>null</em> values are included, i.e., the resulting list is * guaranteed to have the size of the initial collection. */ public static List<String> asStringList(Collection<?> objects) { List<String> result = new ArrayList<String>(); for (Object o : objects) { result.add(String.valueOf(o)); } return result; } }