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What is an Iterator?
Some of the collection classes give traversal of their contents via a java.util.Iterator interface. This interface permits you to walk through a collection of objects, operating on every object in turn.
Remember when using Iterators that they have a snapshot of the collection at the time the Iterator was obtained; generally it is not advisable to modify the collection itself whereas traversing an Iterator.
write a java program to test for class Person Student faculty Employee
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Describe java operators? An operator is a symbol which operates on one or more arguments to generate a result. The Hello World program is so easy it doesn't use any operators,
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