INTERVIEW QUESTIONS J2EE JAVA DETAILS

Question: What is the difference between Iterator and Enumeration

Answer: Iterator is returned by List and other Collection interfaces.
Iterator is fail fast if a modification to the collection is performed while iterating.

Enumeration is used by Vector and Hashtable. Enumeration may or may not throw an error if the collection is changed.

Iterator is returned by List and other Collection interfaces.
Iterator is fail fast if a modification to the collection is performed while iterating.

Enumeration is used by Vector and Hashtable. Enumeration may or may not throw an error if the collection is changed. Source: CoolInterview.com

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