![]() Thus, there is no use of extending the Cloneable and Serializable interfaces.Ħ. The maintainability and ordering of elements is completely dependent on the concrete implementations provided by each of the Collection. The Collection interface in Java specifies a group of objects called elements. Why Collection doesn’t extend the Cloneable and Serializable interfaces? ![]() Map in Java is another form of the Java Set but can’t contain duplicate elements.ĥ. The key here is the unique hashcode and value represent the element. Map Interface: is a two-dimensional data structure in Java that is used to store the data in the form of a Key-Value pair.Public interface Queue extends Collection Elements in Queue will be added from the rear end while removed from the front. it orders the elements in First In First Out manner. Queue Interface: in Java follows a FIFO approach i.e.The Set interface is implemented by various classes such as HashSet, TreeSetand LinkedHashSet. It is majorly used as a mathematical set abstraction model. Since it doesn’t define an order for the elements, the index-based search is not supported. Set Interface: refers to a collection class that cannot contain duplicate elements.The List interface is implemented by various classes such as ArrayList, LinkedList, Vector, etc. ![]() It supports the index-based search, but elements can be easily inserted irrespective of the position.
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