Here you can find the source of readLines(File file)
public static String[] readLines(File file) throws IOException
//package com.java2s; /*/*from w ww . jav a 2s . c om*/ * Copyright (c) 2013 - 2014 http://static-interface.de and contributors * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.util.ArrayList; import java.util.List; public class Main { public static String[] readLines(File file) throws IOException { FileReader fileReader = new FileReader(file); BufferedReader bufferedReader = new BufferedReader(fileReader); List<String> lines = new ArrayList<>(); String line; while ((line = bufferedReader.readLine()) != null) { lines.add(line); } bufferedReader.close(); return lines.toArray(new String[lines.size()]); } }