Leer bytes desde un Fichero

/*
*
* @param file
* @return
* @throws IOException
*/
private byte[] getBytesFromFile(File file) throws IOException {

InputStream is = new FileInputStream(file);

// Get the size of the file
long length = file.length();

if (length > Integer.MAX_VALUE) {
// File is too large
}

// Create the byte array to hold the data
byte[] bytes = new byte[(int)length];

// Read in the bytes
int offset = 0;
int numRead = 0;
while (offset < bytes.length && (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) {
offset += numRead;
}

// Ensure all the bytes have been read in
if (offset < bytes.length) {

throw new IOException("Could not completely read file "+file.getName()); } // Close the input stream and return bytes is.close(); return bytes;

}