How to convert ZonedDateTime to Date?

Question

I am trying to set a server agnostic date time in my database and I believe the best practice to do so is to set a UTC DateTime. My db server is Cassandra and the db driver

Answer 1

You can do this using the java.time classes built into Java 8 and later.

ZonedDateTime temporal = ...
long epochSecond = temporal.getLong(INSTANT_SECONDS);
int nanoOfSecond = temporal.get(NANO_OF_SECOND);
Date date = new Date(epochSecond * 1000 + nanoOfSecond / 1000000);