Here you can find the source of appendFile(String fileName, byte[] data)
public static boolean appendFile(String fileName, byte[] data)
//package com.java2s; /*// ww w . ja v a 2s .c o m * This software is OSI Certified Open Source Software * * The MIT License (MIT) * Copyright 2000-2001 by Wet-Wired.com Ltd., Portsmouth England * * 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.*; public class Main { public static boolean appendFile(String fileName, byte[] data) { FileOutputStream out = null; try { out = new FileOutputStream(fileName, true); out.write(data); out.flush(); out.close(); } catch (Exception e) { e.printStackTrace(); return false; } return true; } }