On Fri, Apr 17, 2015 at 8:03 AM, Darran Lofthouse <darran.lofthouse@jboss.com> wrote:

Quick warning for anyone developing using Java 8 but on projects still
dependent on Java 7.

Normally this is fine, as an engineer you make sure you don't use any
new language features or call new APIs and generally it all works.

With Java 8 there is one addition gotcha, Java 8 adds support for
default method implementations on interfaces, to add to this some
pre-existing methods have now been replaced with default
implementations.  The side effect being it is easy to miss that you have
a method missing from a class and it will not be picked up till it is
compiled on Java 7.

e.g. On java.util.Iterator the remove method is now default so classes
that implement this interface no longer need to implement that method
unless they really are providing an implementation of that method.

Regards,
Darran Lofthouse.

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