Here you can find the source of copyLarge(InputStream input, OutputStream output)
InputStream to an OutputStream.
| Parameter | Description |
|---|---|
| input | the <code>InputStream</code> to read from |
| output | the <code>OutputStream</code> to write to |
| Parameter | Description |
|---|---|
| NullPointerException | if the input or output is null |
| IOException | if an I/O error occurs |
public static long copyLarge(InputStream input, OutputStream output) throws IOException
//package com.java2s; /*/*w ww .j a v a 2s .c om*/ * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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 final int READ_BUFFER_SIZE = 4096; private static final int EOF = -1; /** * Copy bytes from a large (over 2GB) <code>InputStream</code> to an * <code>OutputStream</code>. * * This method buffers the input internally, so there is no need to use a * <code>BufferedInputStream</code>. * * The buffer size is given by #DEFAULT_BUFFER_SIZE}. * * @param input the <code>InputStream</code> to read from * @param output the <code>OutputStream</code> to write to * @return the number of bytes copied * @throws NullPointerException if the input or output is null * @throws IOException if an I/O error occurs * @since Shamelessly cloned from Apache Commons IO 1.3 IOUtils */ public static long copyLarge(InputStream input, OutputStream output) throws IOException { return copyLarge(input, output, new byte[READ_BUFFER_SIZE]); } /** * Copy bytes from a large (over 2GB) <code>InputStream</code> to an * <code>OutputStream</code>. * * This method uses the provided buffer, so there is no need to use a * <code>BufferedInputStream</code>. * * * @param input the <code>InputStream</code> to read from * @param output the <code>OutputStream</code> to write to * @param buffer the buffer to use for the copy * @return the number of bytes copied * @throws NullPointerException if the input or output is null * @throws IOException if an I/O error occurs * @since Shamelessly cloned from Apache Commons IO 2.2 IOUtils */ public static long copyLarge(InputStream input, OutputStream output, byte[] buffer) throws IOException { long count = 0; int n = 0; while (EOF != (n = input.read(buffer))) { output.write(buffer, 0, n); count += n; } return count; } }