Here you can find the source of inputStreamToByteArray(final InputStream is, final int bufferSize)
public static byte[] inputStreamToByteArray(final InputStream is, final int bufferSize) throws IOException
//package com.java2s; /*/*from w w w .j av a2s. co m*/ * Copyright 2012 Daniel Bechler * * 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 byte[] inputStreamToByteArray(final InputStream is, final int bufferSize) throws IOException { final byte[] buffer = new byte[bufferSize]; final ByteArrayOutputStream os = new ByteArrayOutputStream(); int length = is.read(buffer); while (length > 0) { os.write(buffer, 0, length); length = is.read(buffer); } return os.toByteArray(); } }