How can I debug variance issues in Java?

How can I debug variance issues in Java?

Debugging variance issues in Java often involves understanding generics and type bounds. Can you provide more details about the issue you're facing?

I'm getting a compile-time error related to wildcards in my generic classes.

That sounds like a common issue. Are you using bounded wildcards, and if so, can you share the specific code snippet?

Yes, I'm using <? extends T> and <? super T>, but I'm confused about when to use each.

Great question! Use <? extends T> when you want to read items from a structure, and <? super T> when you want to write items. Would you like examples?

Yes, please provide examples for both cases.