Here you can find the source of trim(List
public static void trim(List<String> strs)
//package com.java2s; /******************************************************************************* * Copyright 2011 See AUTHORS file./*from w w w . ja va 2 s . c om*/ * * 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 { /** * Trims every string of a collection. */ public static void trim(List<String> strs) { for (int i = 0, n = strs.size(); i < n; i++) strs.set(i, strs.get(i).trim()); } /** * Trims every string of an array. */ public static void trim(String[] strs) { for (int i = 0, n = strs.length; i < n; i++) strs[i] = strs[i].trim(); } }