> On 16 Nov 2017, at 09:28, Piotr Findeisen <piotr.findei...@gmail.com> wrote: > > Hi Paul, > > I think this is also how it looks like in Java 8
Yes. > (but I also checked docs & code in 9 before posting). Ok. > Basically, in List.sort docs, the word "stable" is @implNote for *default > implementation*, not a contract that a subclass implementor must obey. > At least I understand this that way. > Yes. > Thus, for List not having specialised sort implementation, > Collections.sort(List) will be stable sort. > For a List that has specialised sort implementation (that happens not to be > stable), Collections.sort(List) will not be stable as well, even though > javadoc expressly promises that. > Agreed, we need to specify the stability on List.sort (as we do for ordered streams on Stream.sorted). I logged this issue: https://bugs.openjdk.java.net/browse/JDK-8191429 <https://bugs.openjdk.java.net/browse/JDK-8191429> Thanks for reporting this, Paul.
