Please read this! Your goal shouldn’t be to become a Java performance “tuning” expert, but rather to become expert in Java and performance.

I don’t think you can realistically expect to become an “expert” in just one year. How much you can achieve and learn is up to you, but you need to put in a lot of work. I’d suggest reading as many books as you can, and there are endless resources on the web. For Java application servers:
Glassfish
WebLogic
WebSphere
Tomcat
JBoss

This is Venkat,I’m working as PerfEng from 1 year i main intension to become expertise in java performance tuning for that wt are the areas i have to concentrate ,pls help me out to find out my dreampath

Thanks
venkat.