[xwiki-devs] [VOTE] Move to Java 8 as minimal version for XWiki 8.0+

Hi devs, I’d like to propose that we move to Java 8 as the minimal Java version supported for XWiki 8.0+. The rationale is: * Java 7 is end of life since April 2015. * It brings [Default Methods|https://docs.oracle.com/javase/tutorial/java/IandI/defaultmethods.h…] which would make retro compatibility a lot easier for us (it's very hard to add new features to existing API right now). * Required for: ** Infinispan 8 ** JGroups 4 ** Jetty 9.3+ seems to require Java 8 (or maybe it's just optimized for it, http://download.eclipse.org/jetty/ is not crystal clear about what "Java 8+" means exactly) Nice to have * Lambda Expressions * Repeating Annotations which would probably allow us to use several times \@Named instead of \@Component(hints=\{"hint1", "hint2"\}) for example * New date/time APIs (pretty much what is in Joda Time). We should refactor our $datetool velocity tool to make the java.time api available from velocity * more… See http://jira.xwiki.org/browse/XCOMMONS-878 Here’s my +1 and my +1 to start requiring Java 8 for 8.0M2. Thanks -Vincent