Check date for null

Question

I want to check if date from database is empty like this:

private boolean hasAccountExpired(LocalDateTime password_changed_at) {

        return password_changed_at.isEqual(null);
}

But I get NPE. What is the proper way to check if date field from database is empty?

`if (Optional.ofNullable(password_changed_at).isPresent()) { ... }` `` — Turing85, Jul 30 '19 at 17:46
As an aside: it is convention to use [camelCase](https://en.wikipedia.org/wiki/Camel_case) for naming variables — Turing85, Jul 30 '19 at 17:50

score 1 · Answer 1 · answered Jul 30 '19 at 17:40

1

password_changed_at == null will tell you if it's null.

However, this doesn't necessarily tell you if it's empty in the database - that depends on your implementation.

answered Jul 30 '19 at 17:40

Michael Berry

1 Answers1