Java File Read via ByteBuffer read(InputStream stream)

Description

read

License

Apache License

Declaration

public static ByteArrayOutputStream read(InputStream stream) throws IOException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

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

public class Main {
    public static ByteArrayOutputStream read(InputStream stream) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        fastCopy(stream, baos);//from   w  w w . j a va  2  s .c o  m
        return baos;
    }

    public static void fastCopy(InputStream input, OutputStream output) throws IOException {
        ReadableByteChannel src = Channels.newChannel(input);
        WritableByteChannel dest = Channels.newChannel(output);
        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);
        }
        src.close();
        dest.close();
    }
}

Related

1. read(File file, long offset, int length)
2. read(File from)
3. read(final File source)
4. read(final FileChannel channel)
5. read(final Reader input, final char[] buffer, final int offset, final int length)
6. read(Path file)
7. read(Path file, int pos, int length)
8. read(Reader reader)
9. read24BitInteger(byte[] threeBytes, ByteOrder order)