Technical Interview

Home
Added Recently
Data Structures
Puzzles
Google & Microsoft
C/C++ Questions
Java Interview Questions
Quantitative Problems
Algorithms
Featured Articles
Amazon Interview Question
Compaq Interview Question
Technical Interview
Interview Process
Introduction Questions
Object Oriented
Google Pages
Fundamental Questions
Resume Tips
Links
Contact Us
Submit Question/Answer

Java Interview Questions and Answers

 

What is an Iterator?

Some of the collection classes provide traversal of their contents via a java.util.Iterator interface. This interface allows you to walk through a collection of objects and to operate on each object in turn. When using Iterators that contain a snapshot of the collection at the time the Iterators were obtained, it is not advisable, in general, to modify the collection itself while traversing an Iterator.