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Collections

 
Ranch Hand
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Netbeans IDE Java
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Hi,

I had a question about collections. We have Set, List, Map which are interfaces and HashSet, ArrayList, HashMap,... which are the classes that are implement this interfaces.
What about the Collection? I had the impression that was an interface but I found it to be a class. What is a class or interface?

Thanks
 
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naro pad wrote:What about the Collection? I had the impression that was an interface but I found it to be a class.


Collection is an interface.

What is a class of interface?


Can you rephrase this ?
 
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Collection or Collections? Both exist.
 
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Collections is a class
Collection is an interface
 
naro pad
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Ok now I understand, I didn't know that both exist. I was missing the (s) at the end of the Collection that's why I was confused.

Thank you guys
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