Enumeration and Iterator both are using looping statement.
Enumeration is legacy class.iterator is cotains extra 
method than Enumeration.

While iteration we can remove the elements but it's not in 
case enumeration and Enumeration is faster than the 
iteration.

Enumeration is a read only interface, by using this we can 
loop thro' the elements only. But using iterator interface 
we can traverse and also remove the object.

Enumeration contains elements method for iteration.
And hasMoreElements and nextelement() methods to get the 
values from the collection.
Iterator contains iterator() method for iteration
And hasnext() and next() methods for the retrieval of 
values from the collection.