Understanding upper and lower bounds on ? in Java Generics
I am really having a tough time understanding the wild card parameter. I have a few questions regarding that.
?as a type parameter can only
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Hmmmm your statement on
super(printAll(MyList)) is not clear. What it means, assuming Myclass extendsObjectis that you canprintAll(MyListand you can) printAll(MyListbut nothing else.... it means that the generic type of MyList has to be a superclass (not a subclass) of MyClass. This is different to what you said.As for the T, E, K, V, or N, well, these are meaningless names in and of themselves. You can use anything you want. Convention suggests single-letter upper-case values though, and T is often used for generic methods, and E for classes....
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