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

Error description is provided in Stephan Herrmann's comment. There is open Eclipse issue to make this issue more user friendly.

Solution is to include following dependency:

    org.eclipse.jdt
    org.eclipse.jdt.annotation
    2.0.0