Here you can find the source of concatLines(List
static String concatLines(List<String> lines)
//package com.java2s; /*//from w w w.ja va2 s . com * Copyright 2013-2014 S. Webber * * 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 { static final String LINE_BREAK = "\n"; /** * Combines the specified list into a single {@code String}. * <p> * Each line will be followed by {@code #LINE_BREAK}. */ static String concatLines(List<String> lines) { StringBuilder sb = new StringBuilder(); for (String line : lines) { sb.append(line); sb.append(LINE_BREAK); } return sb.toString(); } }