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JavaTM 2 Platform Standard Ed. 5.0 |
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public interface Iterator<E>
An iterator over a collection. Iterator takes the place of Enumeration in the Java collections framework. Iterators differ from enumerations in two ways:
This interface is a member of the Java Collections Framework.
Collection,
ListIterator,
Enumeration| Method Summary | |
|---|---|
boolean |
hasNext()
Returns true if the iteration has more elements. |
E |
next()
Returns the next element in the iteration. |
void |
remove()
Removes from the underlying collection the last element returned by the iterator (optional operation). |
| Method Detail |
|---|
boolean hasNext()
E next()
hasNext() method returns false will
return each element in the underlying collection exactly once.
NoSuchElementException - iteration has no more elements.void remove()
UnsupportedOperationException - if the remove
operation is not supported by this Iterator.
IllegalStateException - if the next method has not
yet been called, or the remove method has already
been called after the last call to the next
method.
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JavaTM 2 Platform Standard Ed. 5.0 |
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Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.