I keep on running in to questions (mock exams and here too) about Float.NaN and POSITIVE_INFINITY etc.
Now my question is, should I study about those for JSCP 5.0 ? Since in K&B no attention is put on those. Or does it go without saying that one should know the methods and constants of the classes touched in the book ? if so I should review my study strategy...
If you want your studies to be very precise, you may leave these because the probability of having questions on these is very less. However, you cannot be sure. So I would suggest you to just read a little bit about them.