core-libs-dev is the right mailing list. The documentation could be improved, but it's nuanced - consider using a TreeSet with a Comparator that accepts null.
On Sat, Oct 13, 2018 at 7:26 AM, Kishor Gollapalliwar < kishor.gollapalli...@gmail.com> wrote: > Hello Everyone, > > Introduction : I’m an enthusiast java developer. I’m a newbie in this > group, hence please ignore my nuisance and guide me towards right > direction. > > ## Problems Statement > > Treeset#add method documentations : “adds the specified element e to this > set if the set contains no element e2 such that (e==null ? e2==null : > e.equals(e2))” > > Inconsistencies: > > > If we try to add “null” value, it will throws NullPointerException, hence > > e and e2 can not be null. > > > > > And e.compareTo(e2) ==0 || compare(e, e2)==0, it will not add to > > collection. > > > Request you to help me understand if behavior of Treeset#add method is as > expected, and differ with set interface documentation. We may have to > consider to update method documentations, if behavior is expected. > > For more details I have attached the sample java application. > > I’ve tested the behavior on Orack JDK 8u181 (64 bit) and Open JDK 8u181. > > Thanks & Regards, > *Kishor Golapelliwar,* > The ability to convert ideas to things is the secret to outward success. >
