How to calculate the difference between two Java java.sql.Timestamps?

Question

Please include the nanos, otherwise it would be trivial:

long diff = Math.abs(t1.getTime () - t2.getTime ());

[EDIT] I want the most precis

Answer 1

In what units? your diff above will give milliseconds, Timestamp.nanos() returns an int, which would be in (millionths?) of a millisecond.So do you mean e.g.

(t1.getTime () + (.000001*t1.getNanos()) - (t2.getTime () + (.000001*t2.getNanos())

or am I missing something? Another question is do you need this level of precision? AFAIK the JVM isn't guaranteed to be precise at this level, I don't think it'd matter unless you're sure your datasource is that precise.