Here you can find the source of readFile(String fileName, String characterEncoding)
public static String readFile(String fileName, String characterEncoding) throws UnsupportedEncodingException, FileNotFoundException, IOException
//package com.java2s; /******************************************************************************* * Copyright (c) 2014 eBay Software Foundation. * * 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./*w ww.j a v a 2 s. co m*/ *******************************************************************************/ import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; public class Main { public static String readFile(String fileName, String characterEncoding) throws UnsupportedEncodingException, FileNotFoundException, IOException { FileInputStream fis; InputStreamReader isr; StringBuilder sb = new StringBuilder(75000); char[] buf = new char[4096]; int numRead; fis = new FileInputStream(fileName); isr = new InputStreamReader(fis, characterEncoding); do { numRead = isr.read(buf, 0, buf.length); if (numRead > 0) { sb.append(buf, 0, numRead); } } while (numRead >= 0); isr.close(); fis.close(); return sb.toString(); } }