Check whether a string is not null and not empty

Question

How can I check whether a string is not null and not empty?

public void doStuff(String str)
{
    if (str != null && str != \"**here I want to check          


        

Answer 1

It is a bit too late, but here is a functional style of checking:

Optional.ofNullable(str)
    .filter(s -> !(s.trim().isEmpty()))
    .ifPresent(result -> {
       // your query setup goes here
    });