Java File to Byte Array getBytesFromFile(File file)

Description

Extracts the bytes from a file.

License

Open Source License

Parameter

Parameter	Description
file	the file from which the bytes should be extracted from

Exception

Parameter	Description
IOException	an exception

Return

a byte arry corresponding to the file. Is never null.

Declaration

public static byte[] getBytesFromFile(File file) throws IOException 

Method Source Code

//package com.java2s;
/*//ww  w.j a  v  a2 s  .c  o m
 * Created on 14-Jan-2004 at 16:07:22.
 *
 * Copyright (c) 2004-2005 Robert Virkus / Enough Software
 *
 * This file is part of J2ME Polish.
 *
 * J2ME Polish 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.
 * 
 * J2ME Polish 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 J2ME Polish; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * Commercial licenses are also available, please
 * refer to the accompanying LICENSE.txt or visit
 * http://www.j2mepolish.org for details.
 */

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;

import java.io.IOException;

public class Main {
    /**
     * Extracts the bytes from a file.
     * @param file the file from which the bytes should be extracted from
     * @return a byte arry corresponding to the file. Is never null.
     * @throws IOException
     */
    public static byte[] getBytesFromFile(File file) throws IOException {
        FileInputStream inputStream = null;
        ByteArrayOutputStream outputStream = null;
        try {
            byte[] buffer = new byte[4096];
            inputStream = new FileInputStream(file);
            outputStream = new ByteArrayOutputStream();
            int read;
            while ((read = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, read);
            }
            byte[] byteArray = null;
            byteArray = outputStream.toByteArray();
            return byteArray;
        } finally {
            if (inputStream != null) {
                inputStream.close();
            }
            if (outputStream != null) {
                outputStream.close();
            }
        }
    }
}

Related

1. getBytesFromFile(File file)
2. getBytesFromFile(File file)
3. getBytesFromFile(File file)
4. getBytesFromFile(File file)
5. getBytesFromFile(File file)
6. getBytesFromFile(File file)
7. getBytesFromFile(File inputFile)
8. getBytesFromFile(final File file)
9. getBytesFromFile(String file)