Java InputStream Copy nio copyStream(InputStream in, OutputStream out)

Description

copy Stream

License

Open Source License

Declaration

public static void copyStream(InputStream in, OutputStream out) throws IOException 

Method Source Code

//package com.java2s;
/* /*from   ww  w .  j a  v  a 2s  . c  o  m*/
 * The Fascinator - Solr Portal
 * Copyright (C) 2008  University of Southern Queensland
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;

public class Main {
    public static void copyStream(InputStream in, OutputStream out) throws IOException {
        ReadableByteChannel src = Channels.newChannel(in);
        WritableByteChannel dest = Channels.newChannel(out);
        ByteBuffer buffer = ByteBuffer.allocateDirect(16 * 1024);
        while (src.read(buffer) != -1) {
            buffer.flip();
            dest.write(buffer);
            buffer.compact();
        }
        buffer.flip();
        while (buffer.hasRemaining()) {
            dest.write(buffer);
        }
    }

    public static void copyStream(Reader in, Writer out) throws IOException {
        char[] buffer = new char[4096];
        int n = 0;
        while (-1 != (n = in.read(buffer))) {
            out.write(buffer, 0, n);
        }
    }
}

Related

1. copy(InputStream src, File dst)
2. copy(InputStream stream, File file)
3. copyStream(final InputStream aInStream, final OutputStream aOutStream)
4. copyStream(final InputStream in)
5. copyStream(final InputStream is, final OutputStream os)
6. copyStream(InputStream input, OutputStream output)
7. copyStream(InputStream src, OutputStream dest)