UML extending class associations with generalizations - Software Engineering Stack Exchange

I have a simple concept like in the image below. Basically there is an Item which can be 1 of 3 types and a character that can be 1 out of 2 types. All generalizations are disjoint. What I'm tryin

Generalization, Specialization, and Inheritance

UML Generalization - Javatpoint

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Class diagram for a purchase order application

UML extending class associations with generalizations - Software Engineering Stack Exchange

UML Generalization - Javatpoint

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UML Class Diagrams: Basic Concepts - ppt video online download