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10. 9 key interfaces of Collection framework vi Queue ?
It is child interface of Collection.
If we want to represent a group of individual objects prior
to processing then we should go for Queue.
Before sending a mail all mail id’s
we have to store somewhere and in which order we saved in
the same order mail’s should be delivered (First in
First Out) for this requirement Queue concept is the best
* All the above interfaces ( Collection,List,Set,SortedSet,NavigableSet
and Queue) meant for representing a group of individual
* If we want to represent a group of objects as key value
pairs then we should go for Map Interface.