Whats the main difference between a Collection of String (Collection)and a simple, plain collection?
Whats the main difference between a Collection of String (Collection)and a simple, plain collection?
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Whats the main difference between a Collection of String (Collection)and a simple, plain collection?
A plain
Collectionwill accept any kind ofObject, while aCollection<String>will only acceptStrings.If instead of
Stringyou had aCollectionof something that could be extended, sayCollection<List>, then the collection would accept anything that is a subtype ofList. Sun’s Java Tutorial on Generics is a good place to go to learn more.