How to handling Binary data and File operation?

Question

Hello Everyone,
I think this question might have been asked a lot of time but I was unable to find one solution so, please help needed in this from all you guys..
I am creating a byte[] of the media files of mp4, and jpg, using the below code,,
File ff = new File(filename);
        fos = new FileOutputStream(ff);
        int b;
        byte[] f = this.getMediaFile();
        for (b = 0; b < f.length; b++) {
            if (f[b] != -1) {
                fos.write(f);
fos.flush();
fos.close();
After i convert it i have to store it in the MySql Database as BLOB object, for retrieving byte[] from the database is simple i can do that also successfully with this code.java.sq.Blob obj = (java.sql.Blob) rs.getBlob("file");
InputStream is = null;
ByteArrayOutputStream bc = null;
is = obj.getBinaryStream();
bc = new ByteArrayOutputStream();
int b;
while ((b = is.read()) != -1) {
System.out.print(b + " ");
bc.write(b);
Now the real problem is that when i want to recreate a mp4 audio or video file i am unable to do so, the file created is smaller in size and also it doesn't get played in windows default player nor VLC. I am able to get the image file of jpg format using the BufferedImage & ImageIO.writer();
How do i do for mp4 file, have no clue for that.
Pleases help out with this.
Thanks..                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

Answer 1

if (f[b] != -1) {I don't get that line. What if you try to output the data without that condition, like this:
fos = new FileOutputStream(ff);
        byte[] f = this.getMediaFile();
        for (int b = 0; b < f.length; b++) {
             fos.write(f);
fos.close();