What are Vector, Hashtable, LinkedList and Enumeration?
What are Vector,
Hashtable, LinkedList and Enumeration? - Vector : The Vector class provides the
capability to implement a growable array of objects. Hashtable : 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. LinkedList: 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. Enumeration: 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.