NPE checked by StringUtils.isNotBlank still causing eclipse @NotNull warning

Question

I am using @NotNull annotation, as you can see I am using:

StringUtils.isNotBlank()

to check NP, but I have still Eclipse warning there. If I use

oldlink != null

it wont show warning.

Does anyone know what can be problem when using apache commons StringUtils ?

Answer 1

Looks like only this help, null check and the use of StringUtils.isNotEmpty(), even StringUtils.isNotBlank() does the same: