What are the most important new Java 7 features?

Of all the new Java 7 features covered in the study guide, what would you consider to be the most important (awesome) ones for the real world? For just the exam?
I really love the multi-catch, but don't find I use many of the other ones.

Thanks!

Have a look here: http://programmers.stackexchange.com/questions/193630/summary-of-differences-between-java-versions

Well for me anyway, I found the following Java 7 new feature "handy"
try-with-resource
String in switch
NIO2 improved API (like who uses NIO back in Java 1.4 when it was available)


The others are I don't find it that useful at least not yet.

About multi-catch, I honestly prefer the old way.

For me the most important/handy feature is try-with-resources. Followed by the improved NIO2.0 API.

And from clean, clutter-free, easy-to-read code, I also like the diamond syntax. Certainly when you are writing your own generic classes/methods

I liked the try with resources and the Fork and Join framework.

Underscores in numeric literals are clearly syntactic sugar, but, hey, they can be quite comfortable.

Number one is try with resources, then multi catch (combined with the ability to rethrow more specific exceptions).

The fork join framework is nice and I'm looking forward to finding something to throw at it in the workplace but as yet I'm sturggling! However I do like the recent enhancement to the Executors factory / utility class to provide lots of convienience ExecutorServices for thread pools, very handy.

I think automatic resource management is very important features, one make your code more robust.

fork join framework, Concurrency improvements(thread pools) and resource management