Switch to Embedded java

Hi,
I need your suggestion here. I did BE Electronics (India) with second class , then did MS in Information Systems with 4.0 GPA and currently working in USA as J2EE Developer with 1.5 years of experience. But, my real interest is micro-controller programming, assembly language etc. I am really not sure how can I switch to Embedded Systems now. I don't have any embedded system programming experience. I did some micro-controller programming for my academic project in India. I know c,c++,8085/8086 programming.
What should I do? Do I need to learn languages like VHDL? What is Embedded java?
Are there any apportunities for Embedded java developer in India? specific Pune?
Please help.