There are four main basic interfaces of Java Collections Framework:

Collection: The collection defines is the root of the collection hierarchy. A collection provides a group of different objects CALLED its ELEMENT.

Set: Set is a collection which cannot provide duplicate elements. Set interface models the mathematical set ABSTRACTION and it is USED for a deck of cards.

List: A list provides ordered and collection can obtain duplicate elements. So, you can easily find any element from its indexes.

Map: A map cannot obtain duplicate keys. Each key can map to at most one value.

The some different type’s interfaces are:

• Queue
• Dequeue
• ITERATOR
• SortedSet
• SortedMap
• ListIterator

There are four main basic interfaces of Java Collections Framework:

Collection: The collection defines is the root of the collection hierarchy. A collection provides a group of different objects called its element.

Set: Set is a collection which cannot provide duplicate elements. Set interface models the mathematical set abstraction and it is used for a deck of cards.

List: A list provides ordered and collection can obtain duplicate elements. So, you can easily find any element from its indexes.

Map: A map cannot obtain duplicate keys. Each key can map to at most one value.

The some different type’s interfaces are: