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Java Collection

Java Collection Framework

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by , 01-08-2012 at 12:19 PM (3994 Views)
List, Map and Set are the core interfaces supported by collection framework. Collection interface is extended by List and Set. There is also a Collections class in java that is a utility class and does not confuse it.
A Set contains only unique elements and prevents duplication. Set is implemented by HashSet and TreeSet. List is a collection of ordered elements and it may contain duplicates. List is implemented by ArrayList, LinkedList and Vector.

Map supports key value mapping. It may contain duplicate values but keys must be unique in a map. Map is implemented by HashMap, TreeMap and Hashtable.

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Java Collection Framework

Benefits of Collection Framework

Polymorphic algorithms
Set algebra

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