A DESCRIPTION OF THE PROBLEM :
There is such text on the page https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#getEpochSecond--

"The nanosecond part of the day is returned by getNanosOfSecond."

But the method getNanosOfSecond() does not present in that doc.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The nanosecond part of the second is returned by getNano.
ACTUAL -
The nanosecond part of the day is returned by getNanosOfSecond.

URL OF FAULTY DOCUMENTATION :
https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#getEpochSecond--