Android File to ByteBuffer Read bufferFile(File file)

Description

buffer File

License

Open Source License

Declaration

public static ByteBuffer bufferFile(File file) throws IOException 

Method Source Code

//package com.java2s;
/*/*from w  w  w  .ja  va  2 s .  c  om*/
 * Copyright (c) 2015. Philip DeCamp
 * Released under the BSD 2-Clause License
 * http://opensource.org/licenses/BSD-2-Clause
 */

import java.io.*;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class Main {
    public static ByteBuffer bufferFile(File file) throws IOException {
        long size = file.length();

        ByteBuffer buf = ByteBuffer.allocate((int) (size & 0x7FFFFFFF));
        FileChannel chan = new FileInputStream(file).getChannel();
        while (buf.remaining() > 0) {
            int n = chan.read(buf);
            if (n <= 0)
                throw new IOException("Read operation failed.");
        }

        chan.close();
        buf.flip();
        return buf;
    }
}

Related

1. readToByteBuffer(File f)
2. readToByteBuffer(File f, int toRead)