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Iterator allows us to remove elements from collection during traversal but Enumeration doesn't allow that, it doesn't support the remove() method.  

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*Enumeration                                                                                                                                                                                                                                                                                                                                                  1, enumeration: numbered list.                                                                                                                                       2,enumeration: the acts of counting reciting number in assending order,"the counting countinued for several hours enumeration hours.                                                                                                                                       *Iterator                                                                                                                                                                     The essence of the Iterator Factory method Pattern is to "Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation."                                              

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