How to call exe from jsp dynamically without hardcoding file path

Hi all,
I face some problem, I want to run exe from JSP. I can run it but I need to give full path of file. I want to call dynamically without hardcoding fullpath. Just giving filename.

I don't want

exec ("C:\Program File\Coro\sign.exe");

I want

exec("sign.exe")

I don't know for sure but what about using the getRealPath method available in ServletContext interface.

Refer the docs from here

This method will give you the actual physical path of the executable file without hard coding the path in the source code.