How to open user system "select program to open with" for given file?

Question

Hi,
I'm trying to make file management application in Java.
I already know how to open file in system preferred application. It's quite easy.
The other issue I thinking about now is that I need to implement "Open With" functionality (like in Ubuntu: you right press on the file -> select "Open With" -> "Other" and system's default application selection window starts.
I tried to manage that with some Java default classes, but I didn't found one.
So, I'm working on solution, based on Runtime.getRuntime().exec("something");
I already know what commands i should write in Mac and Windows to open "application selection" for file:
1) Windows: RUNDLL32.EXE SHELL32.DLL,OpenAs_RunDLL <file.ext>
2) Mac: open <file.ext>
How to do same on linux (Gnome/KDE)? I still not found easy solution for that.
Or maybe I am digging in wrong direction? If so - prease correct me.
P.S. I tried Desktop.getDesktop() and Java Desktop Integration Components (JDIC), but it seems, that both of them don't have a function for functionality i need.
Thank you for your replies.

Answer 1

Never seen that one before. Maybe a Linux forum can help with that.
Anyway. since ps seems to be working, you might try the following:
before opening the dialog
ps -auxww | grep <username> | grep -v grep | awk '{print $2}' | sort > beforeafter opeing the dialog (and while it is still open)
ps -auxww | grep <username> | grep -v grep | awk '{print $2}' | sort > after
diff before after
ps -auxww <pidfromabove>