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java Programming Glossary: foo3How can I add to List<? extends Number> data structures? http://stackoverflow.com/questions/2776975/how-can-i-add-to-list-extends-number-data-structures a List which is declared like this List extends Number foo3 new ArrayList Integer I tried to add 3 to foo3. However I get.. Number foo3 new ArrayList Integer I tried to add 3 to foo3. However I get an error message like this The method add capture#1.. you can't. The wildcard declaration of List extends Number foo3 means that the variable foo3 can hold any value from a family..
difference between <? super T> and <? extends T> in Java http://stackoverflow.com/questions/4343202/difference-between-super-t-and-extends-t-in-java extends The wildcard declaration of List extends Number foo3 means that any of these are legal assignments List extends Number.. any of these are legal assignments List extends Number foo3 new ArrayList Number Number extends Number in this context List.. Number extends Number in this context List extends Number foo3 new ArrayList Integer Integer extends Number List extends Number..
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