Here you can find the source of appendToFile(String baseFilename, String appendingFilename)
public static void appendToFile(String baseFilename, String appendingFilename) throws IOException
//package com.java2s; /*//from w ww . j a v a2 s .co m * Copyright 2011-2012 University of Toronto * * 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.*; public class Main { public static void appendToFile(String baseFilename, String appendingFilename) throws IOException { BufferedWriter writer = new BufferedWriter(new FileWriter(baseFilename, true)); BufferedReader reader = new BufferedReader(new FileReader(appendingFilename)); String line; while ((line = reader.readLine()) != null) { writer.write(line); writer.write("\r\n"); } writer.close(); reader.close(); } }