Here you can find the source of readFileToString(String fileName)
public static final String readFileToString(String fileName) throws IOException
//package com.java2s; /*//from ww w . j a v a 2s .c o m * Copyright 2010 akquinet * 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.io.FileInputStream; import java.io.IOException; import java.io.InputStream; public class Main { public static final String readFileToString(String fileName) throws IOException { FileInputStream fis = new FileInputStream(fileName); String out = readInputStream(fis); fis.close(); return out; } public static final String readInputStream(InputStream is) throws IOException { StringBuffer acc = new StringBuffer(); byte[] buf = new byte[1024]; int len; while ((len = is.read(buf)) > 0) { for (int i = 0; i < len; i++) { acc.append((char) buf[i]); } } is.close(); return acc.toString(); } }