Twenty-three years ago, in his Design Principles and Design Patterns article ... but Martin's quick description initially reads like a summary of Java's out-of-the-box inheritance and polymorphism ...

A method might accept a specific type and its subclasses, but you want to restrict usage to a select few implementations of your own design. Java's open inheritance model can ... including pattern ...

The first half of this introduction to Java inheritance ... When viewing an inheritance hierarchy, you can easily detect multiple inheritance by the presence of a diamond pattern.