Set: Set is a data structure that is used for storing and processing non duplicate elements. It is an interface which extends collection and it is an unordered collection of objects. Set is implemented by LinkedHashSet, HashSet or a TreeSet. LinkedHash Set: In order to store its elements internally, the LinkedHashSet uses Linked HashMaps and it is an ordered version of HashSet that maintains a doubly-linked List across all elements. Hash Set: In order to store its elements internally, the HashSet uses HashMaps and it implements the Set interface, backed by a hash table which is actually a HashMap instance

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Chapter 21.4, Problem 21.4.1CP

Program Plan Intro

Set:

Set is a data structure that is used for storing and processing non duplicate elements. It is an interface which extends collection and it is an unordered collection of objects.

Set is implemented by LinkedHashSet, HashSet or a TreeSet.

LinkedHash Set:

In order to store its elements internally, the LinkedHashSet uses Linked HashMaps and it is an ordered version of HashSet that maintains a doubly-linked List across all elements.

Hash Set:

In order to store its elements internally, the HashSet uses HashMaps and it implements the Set interface, backed by a hash table which is actually a HashMap instance

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