Java Coding Problems

Date – Instant

In order to convert from Date to Instant, the solution can rely on the Date.toInstant() method. The reverse can be accomplished via the Date.from(Instant instant) method:

• Date to Instant can be accomplished like this:

Date date = new Date();// e.g., 2019-02-27T12:02:49.369Z, UTCInstant instantFromDate = date.toInstant();

• Instant to Date can be accomplished like this:

Instant instant = Instant.now();// Wed Feb 27 14:02:49 EET 2019, default system time zoneDate dateFromInstant = Date.from(instant);

Keep in mind that Date is not time-zone aware, but it is displayed in the system default time zone (for example, via toString()). Instant is with a UTC time zone.

Let's quickly wrap these snippets of code in two utility methods, ...