HashMap resize method implementation detail

Question

As the title suggests this is a question about an implementation detail from HashMap#resize - that\'s when the inner array is doubled in size. It\'s a bit word

Answer 1

Order in a Map is really bad [...]

It's not bad, it's (in academic terminology) whatever. What Stuart Marks wrote at the first link you posted:

[...] preserve flexibility for future implementation changes [...]

Which means (as I understand it) that now the implementation happens to keep the order, but in the future if a better implementation is found, it will be used either it keeps the order or not.