Java File Content to Byte Array getFileContentAsBytes(String fileName)

Description

Gets the file content as bytes.

License

Open Source License

Parameter

Parameter	Description
fileName	the file name

Exception

Parameter	Description
Exception	the exception

Return

the file content as bytes

Declaration

static public byte[] getFileContentAsBytes(String fileName) throws Exception 

Method Source Code

//package com.java2s;
/*/* www .  j  a va2s.  c om*/
 * Copyright (C) 2007-2008 Castafiore
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation; either version 3
 * 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, see<http://www.gnu.org/licenses/>.
 */

import java.io.BufferedInputStream;

import java.io.ByteArrayOutputStream;

import java.io.FileInputStream;
import java.io.InputStream;

public class Main {
    /**
     * Gets the file content as bytes.
     *
     * @param fileName the file name
     * @return the file content as bytes
     * @throws Exception the exception
     */
    static public byte[] getFileContentAsBytes(String fileName) throws Exception {
        FileInputStream is = new FileInputStream(fileName);
        return getStreamContentAsBytes(is);
    }

    /**
     * Gets the stream content as bytes.
     *
     * @param is the is
     * @return the stream content as bytes
     * @throws Exception the exception
     */
    static public byte[] getStreamContentAsBytes(InputStream is) throws Exception {

        BufferedInputStream buffer = new BufferedInputStream(is);
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        byte[] data = new byte[buffer.available()];
        if (buffer.available() == 0) {
            return data;
        }

        int available = -1;
        while ((available = buffer.read(data)) > -1) {
            output.write(data, 0, available);
        }
        return output.toByteArray();
    }
}

Related

1. getFileContentAsByteArray(String fileName)
2. getFileContentAsByteArray(String fileName)
3. getFileContentAsBytes(String fileName)
4. getFileContentByte(InputStream inputStream, long offset, int length)
5. getFileContentsAsByteArray(String filename)