I mainly maintain my contact with my mentor Raphael Mack via email . so after some discussions and some ideas from my mentor . I finally managed to make a GUI on which I will be continuing my work .
My plugin is divided in three part .
1. GUI itself(design with Netbeans used Metal theme as JOSM uses simmilar one
2 . Bridging with GPSBabel
3. Integrating with JOSM (Java Open Street Map Editor )
the screenshot of GUI is here :-

My current work is to interlink the gui parts . In the mean time as per my mentors suggestion I am working on a java class that is actually goint to call gpsbabel .
so I have
GUI —> bridge java class — > gpsbabel call .
I will be posting codes regarding this soon coz ” no commitment no work ” is the final motto .. bleh
P.S : I am also looking for a GPS device and shortlisted Garmin Ventura HCx and Vista HCx from the same (Pradeepto has got one ) . Need Sugesstions here if anybody as any experieences with these devices .
P.P.S : exams extended due to CPI(m) and trinamul congress bandh regarding fuel price hike . ( I feel like demolishing these two parties ) .[:(]
It’ll be worthwhile changing the Wypoints Routes Tracks radio buttons to checboxes, since gpsbabel can accept all three flags at once.
suggestion heard ! will be changed soon