Here you can find the source of copyStream(InputStream in, OutputStream out)
public static long copyStream(InputStream in, OutputStream out) throws IOException
//package com.java2s; /*/* w ww.ja v a 2s . c o m*/ * Copyright 2016 SimplifyOps, Inc. (http://simplifyops.com) * * 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 long copyStream(InputStream in, OutputStream out) throws IOException { return copyStream(in, out, 10240); } public static long copyStream(InputStream in, OutputStream out, int bufsize) throws IOException { final byte[] buffer = new byte[bufsize]; long tot = 0; int c; c = in.read(buffer); while (c >= 0) { if (c > 0) { out.write(buffer, 0, c); tot += c; } c = in.read(buffer); } return tot; } }