There were many questions and people generally seemed interested in the stuff. I mostly talked about the following features:
1. Project Coin:
- Switch on Strings
- Binary literals and underscores in numeral literals.
- Improved type inference for generic instance creation - Diamond.
- Multi - catch and more precise rethrow.
- Try with resources.
Other things also part of java 7 are:
3. Unicode 6.0 character set
4. New I/O and concurrent APIs