question: public static String appendPath ( String pathTo , String pathFrom ) { if ( pathTo == null || pathTo . length ( ) == 0 ) { return pathFrom ; } else if ( pathFrom == null || pathFrom . length ( ) == 0 ) { return pathTo ; } else { return pathTo + File . pathSeparator + pathFrom ; } }
target:  Utility method for appending path from pathFrom to pathTo.