A DESCRIPTION OF THE PROBLEM :
The Javadoc for the java.sql.Timestamp.toString() method states "where ffffffffff indicates nanoseconds". There are 10 f's in the quoted line, however the actual format (which is correct) only has 9 f's.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Formats a timestamp in JDBC timestamp escape format. yyyy-mm-dd hh:mm:ss.fffffffff, where fffffffff indicates nanoseconds.
ACTUAL -
Formats a timestamp in JDBC timestamp escape format. yyyy-mm-dd hh:mm:ss.fffffffff, where ffffffffff indicates nanoseconds.

URL OF FAULTY DOCUMENTATION :
https://docs.oracle.com/javase/8/docs/api/java/sql/Timestamp.html#toString--