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An object which iterates over a collection. More...
|Tests whether there are elements remaining in the collection. |
|Obtain the next element in the collection. |
|Remove from the underlying collection the last element returned by next (optional operation). |
An object which iterates over a collection.
An Iterator is used to return the items once only, in sequence, by successive calls to the next method. It is also possible to remove elements from the underlying collection by using the optional remove method. Iterator is intended as a replacement for the Enumeration interface of previous versions of Java, which did not have the remove method and had less conveniently named methods.
Tests whether there are elements remaining in the collection.
In other words, calling
next() will not throw an exception.
Obtain the next element in the collection.
|NoSuchElementException||if there are no more elements|
Remove from the underlying collection the last element returned by next (optional operation).
This method can be called only once after each call to
next(). It does not affect what will be returned by subsequent calls to next.
|IllegalStateException||if next has not yet been called or remove has already been called since the last call to next.|
|UnsupportedOperationException||if this Iterator does not support the remove operation.|