if( fileName == null ) { return null; }
	public static byte[] getFileContent( String fileName )	{		try		{			//Uses the buffered stream to improve the performance.			BufferedInputStream in = new BufferedInputStream(					new FileInputStream( fileName ) );			ByteArrayOutputStream out = new ByteArrayOutputStream( );			byte[] buf = new byte[1024];			int len;			while ( ( len = in.read( buf ) ) != -1 )			{				out.write( buf, 0, len );			}			return out.toByteArray( );		}		catch ( Exception e )		{		    logger.log( Level.SEVERE,  "Cannot get the content of the file " + fileName, e ); //$NON-NLS-1$		}		return null;	}