Java-What is the difference between <? super E> and <? extends E>?
2012-10-29 10:40
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What is the difference between
The first says that it's "some type which is an ancestor of E"; the second says that it's "some type which is a subclass of E". (In both cases E
itself is okay.)
<? super E>and
<? extends E>?
The first says that it's "some type which is an ancestor of E"; the second says that it's "some type which is a subclass of E". (In both cases E
itself is okay.)
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