This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
Emerging enterprise technologies. The quickest way to know which techlogies is to do this:
open up a job site.
search for java jobs ..for exp level a couple of yrs more than what you have.
optionally, mention a salary range that you wish to earn after a couple of yrs.
see what technologies the job is asking for.