Java通配符泛型疑问求证：对两本经典教材图表的观点是否正确

Hey there! I totally get where you're coming from—Java generics can have some surprisingly nuanced edge cases, and even well-respected textbooks can present diagrams that don't quite align with how you're conceptualizing a particular rule.

To help me give you a precise, authoritative judgment on whether your take is correct, could you share a few key details? Specifically:

• What specific generics concept were the diagrams covering? (Examples: wildcard bounds, type erasure mechanics, generic class inheritance hierarchies, or something else entirely)
• A clear breakdown of how the diagrams in Core Java (9th Edition) and Java Programming: Comprehensive Introduction (10th Edition) depicted the concept
• A description (or even a simple text-based sketch) of what you believe the correct diagram should look like

I’ve spent years debugging and explaining Java generics quirks—for instance, the difference between List<? extends Number> and List<? super Integer> is a common point where diagrams can be misleading, or how raw types interact with generic hierarchies. Once you share those specifics, I can weigh in on whether your alternative representation is accurate, and walk through the reasoning behind it.

内容的提问来源于stack exchange，提问作者cmpltrtok