Editing Java Web Application

Question

I have a small workshop "Modern Autos Workshop" and i am managing my maintenance activities via a Computerized Maintenance Management Software. The application was developed by a freelancer and he simply gave me a windows installer .EXECUTABLE file. The application was designed on JAVA, in short, it was a DYNAMIC JAVA WEB DATABASE APPLICATION. Now i have changed the name of my workshop and i don't know how to change the name displayed on my software and invoices. When i opened the installation directory, following folders were found:

 1= app (contains number of .jar files including "Modern Autos
    Workshop Run.jar" and a "Modern Autos Workshop.war" file)
        2= db (contains .DAT files)
        3= JRE 6 (contains lib folder)
        4= Jetty Temp (contains files extracted from .war file from 1= app folder)
        5= my db (contains lib folder)
        6= my db backup (contains lib folder)
        7= Modern Autos Workshop Run.jar file

i am not a programmer, but please help me if some one can do this impossible thing..!

Answer 1

It would be possible using a decompiler to do what you are trying to do but it will be very hard unless you are an experienced developer.

If you have access to the original source code (at the very least it will have files called ".java" in it) then it is a bit easier but unless you already know the basics of programming it will not be trivial.

Ideally there will be a configuration file or database table that you can change so I would look for files with the extension "properties" or "txt" and also look in the database tables.

For an experienced developer (assuming they have the source code) it will be a very fast and easy job.

Answer 2

Without source code it will be quite difficult. You have to decompile byte code and then perform change and after that compile code again. Assuming you have all the tools, it can be quite complex even for skilled developers.

You can only analize your database if there is data which you can change. That change will be easy. Everything else is not easy, especially not for non-programmers.