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What is the difference between List<Number> and List<? extends Number>?

Asked 2012-08-31T13:27:17.127
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I have a very basic question ragarding Java generics . I thought that both List<Number> and List<? extends Number> are homogeneous . Am I right or is there something fundamental I am missing ?

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List<Number> --> List of Numbers (or instances of Number)

List<? extends Number> --> List any type which extends Number

answered 2012-08-31T13:35:07.437

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