Here you can find the source of readTextFile(File f)
public static String readTextFile(File f) throws IOException
//package com.java2s; /* The MIT License//w w w .ja v a 2 s . c o m * (c) Copyright Sysdeo SA 2001-2002 * (c) Copyright Eclipse Tomcat Plugin 2014-2016 * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, publish, distribute, * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static String readTextFile(File f) throws IOException { StringBuffer buf = new StringBuffer(); BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(f), "UTF-8")); String inputLine; while ((inputLine = in.readLine()) != null) { buf.append(inputLine); buf.append('\n'); } in.close(); return buf.toString(); } }