Null value for Optional type
null assigned to
Optional variable or returned from method returning
It's recommended that you use
Optional.absent() for Guava) to denote an empty value.
After the quick-fix is applied:
Configure the inspection:
Use the Report comparison of Optional with null option to also report comparisons like
optional == null. While in rare cases (e.g. lazily initialized optional field) this might be correct, optional variable is usually never null, and probably
optional.isPresent() was intended.
This inspection only reports if the language level of the project or module is 8 or higher.
New in 2017.2
Report comparison of Optional with null
IntelliJ IDEA 2023.3, Qodana for JVM 2023.3