First of all it's necessary to extract binary files into any directory. On the machine must be installed Java Runtime Environment (JRE) version 1.5.0 or later. Application may work on earlier version of JRE. It's recommended to add to envinronment variable JRE bin directory. Next it's necessary to execute Scanner program (installation-scanner link). Result of the Scanner is two files: wynik.txt and temp.txt. Temp.txt is temporary file to execute Parser. Later it's possible to execute Parser: java Parser file_name, where file_name is path to the file which contains result of Scanner (file wynik.txt, temp.txt), example: wynik.txt, c:\stud\wynik.txt etc. To program test it's added several files contain example code of language which it's defined in BNF document.