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What are Co-variant return types in Java

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Java Experience

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What are Co-variant return types in Java Posted: Dec 27, 2012 6:58 AM
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Co-variant data types are associated with using the generic type to refer to the concrete type. Sample source code showing the use of Map as co-variant return type follows: In the above code, both getHashMap() and getLinkedHashMap() methods specify return type as Map and return instances of HashMap and LinkedHashMap. Moreover, the main method uses [...]

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