Job Oppurtinity

Hi all,
I am a SCJP2 presently working as a Software Engg. Here out work mainly consists of product development in java. Mostly these will be some sort of protocol implementations or so; The matter is that I am somewhat uncertain about what I should study or do (Ofcource insecure about the job)? I am studying for SCJA Part1; but since I am not working in that area I have to spend a lot of time for its study.
I was wondering which area I should concetrate considering from a job market point of view. Thanks for u'r comments in advance.. regards Jacob