Collection interfaces in java
Collection interfaces are abstract data types that represent collections and allow collections to be manipulated independently of the details of their representation.
Collection interfaces are given below:
1. Collection interface:
Collection interface is the root interface in the collection hierarchy. It declares the core methods for all collections.
2. List interface:
A List represents an ordered or sequenced group of elements. It may contain duplicate elements. It extends the collection interface.
3. Set interface:
A set represents a group of elements which can’t contain a duplicate element. It extends the collection interface.
4. SortedSet interface:
SortedSet interface extends Set interface. SortedSet interface maintain ascending order in its elements.
5. Map interface:
A map represents an object with key value pair. A map cannot contain duplicate keys and one key can map to at most one value.
6. Map.Entry Interface:
It provides the facility to work with a map entry.
7. SortedMap interface:
SortedMap interface extends Map interface. It maintains its entries in ascending key order.
8. Queue interface:
Queue represents a collection for holding elements prior to processing.
9. Deque interface:
Deque interface provides the methods to manipulate double-ended-queue or deque. A deque represents a linear collection of elements that support insertion, retrieval and removal of elements at both ends.
10. Enumeration interface:
It provides the methods to get a series of elements from a collection of object taking one at a time.
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