The type org.eclipse.jdt.annotation.NonNull cannot be resolved. It is indirectly referenced from required .class files

Question

When I use the Java 8 method reference double colon operator (::) with new operator (e.g. MyType::new), I get this error in Eclipse of Spring Tool suit

Answer 1

I have solved it by changing the "Use default annotation for null specifications"

I have enter the both class names:

javax.annotation.Nonnull
javax.annotation.Nullable