In Java 8, transform Optional of an empty String in Optional.empty

Question

Given a String I need to get an Optional, whereby if the String is null or empty the result would be Optional.empty. I can do it this way:

String ppo = \"\";
Opt         


        

Answer 1

You could use a filter:

Optional ostr = Optional.ofNullable(ppo).filter(s -> !s.isEmpty());

That will return an empty Optional if ppo is null or empty.