Here you can find the source of read(File file)
public static String read(File file) throws IOException
//package com.java2s; /*//from w w w. j a v a2 s . co m * Copyright 2004-2005 Germinus XXI, Liferay LLC * * 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. * * This is a derived work from source code taken from Liferay. */ import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; public class Main { public static String read(String fileName) throws IOException { return read(new File(fileName)); } public static String read(File file) throws IOException { BufferedReader br = new BufferedReader(new FileReader(file)); StringBuffer sb = new StringBuffer(); String line = null; while ((line = br.readLine()) != null) { sb.append(line).append('\n'); } br.close(); return sb.toString().trim(); } }