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How do you traverse through a collection using its Iterator?

To use an iterator to traverse through the contents of a collection, follow these steps:
 1 Obtain an iterator to the start of the collection by calling the collection iterator() method.
 2 Set up a loop that makes a call to hasNext(). Have the loop iterate as long as hasNext() returns true.
 3 Within the loop, obtain each element by calling next().

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