private byte[] readBytesFromFile(File file) throws IOException {
	    InputStream is = new FileInputStream(file);

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

	    // You cannot create an array using a long type.
	    // It needs to be an int type.
	    // Before converting to an int type, check
	    // to ensure that file is not larger than Integer.MAX_VALUE.
	    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;
	}