Java Interview Question: What are Vector, Hashtable, LinkedList and Enumeration?
The Vector class provides the capability to implement a growable array of objects.
The Hashtable class implements a Hashtable data structure. A Hashtable indexes and stores objects in a dictionary using hash codes as the object’s keys. Hash codes are integer values that identify objects.
Removing or inserting elements in the middle of an array can be done using LinkedList. A LinkedList stores each object in a separate link whereas an array stores object references in consecutive locations.
An object that implements the Enumeration interface generates a series of elements, one at a time. It has two methods, namely hasMoreElements() and nextElement().
HasMoreElemnts() tests if this enumeration has more elements and nextElement method returns successive elements of the series.
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