Collections

[naro pad]

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

[Christophe Verré]

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 ?

[Campbell Ritchie]

Collection or Collections? Both exist.

[Pramod P Deore]

Collections is a class
Collection is an interface

[naro pad]

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