f = new File( fileDir, filePath );
f = new File( fileDir, tmpFilePath );
	private URL tryDiskFileSearch( String fileDir, String filePath )	{		File f = null;		if ( StringUtil.isBlank( fileDir ) )			f = new File( filePath );		else			f = new File( fileDir, filePath );		try		{			if ( f.exists( ) && f.isFile( ) )				return f.getCanonicalFile( ).toURL( );		}		catch ( IOException e )		{			// ignore the error		}		return null;	}