Request to add nonNullOrEmpty method to Strings class

I request to add the nonNullOrEmpty method to the String class. When use stream, can use method reference to write whether the string is null or empty.

stringStream.filter(Strings::nonNullOrEmpty) ...

I think this is useful. What do you think?

[cgdecker]

Though we do have some methods (well, Strings.isNullOrEmpty(), at any rate) that do so, we generally don’t encourage methods that treat null and non-null values the same. There are a lot of ways you could deal with this situation without us needing to add a new method:

• filter(not(Strings::isNullOrEmpty)) (Guava’s Predicates.not())
  • or filter((Strings::isNullOrEmpty).negate()), but this probably doesn’t work without casting Strings::isNullOrEmpty to Predicate<String>
• map(Strings::emptyToNull).filter(Objects::notNull)
• etc.

[try0]

@cgdecker Thank you for presenting an example. I’ll use those.