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java.util
interface Iterator
- All Known Subinterfaces:
- ListIterator, XMLEventReader
- All Known Implementing Classes:
- BeanContextSupport.BCSIterator, Scanner
-
Most common ways to construct:
-
ArrayList sortedMethods = …;
Iterator methodIterator = sortedMethods.iterator();
Based on 24 examples
-
-
Set s = …;
Iterator i = s.iterator();
Based on 21 examples
public interface Iterator
An iterator over a collection. Iterator takes the place of Enumeration in
the Java collections framework. Iterators differ from enumerations in two
ways:
- Iterators allow the caller to remove elements from the
underlying collection during the iteration with well-defined
semantics.
- Method names have been improved.
This interface is a member of the
Java Collections Framework.
Method Summary |
boolean |
Returns true if the iteration has more elements.
|
Object |
Returns the next element in the iteration.
|
void |
Removes from the underlying collection the last element returned by the
iterator (optional operation).
|
hasNext
public boolean hasNext()
-
Returns true if the iteration has more elements. (In other
words, returns true if next would return an element
rather than throwing an exception.)
- Returns:
- true if the iterator has more elements.
next
public Object next()
-
Returns the next element in the iteration.
- Returns:
- the next element in the iteration.
remove
public void remove()
-
Removes from the underlying collection the last element returned by the
iterator (optional operation). This method can be called only once per
call to next. The behavior of an iterator is unspecified if
the underlying collection is modified while the iteration is in
progress in any way other than by calling this method.
This documentation differs from the official API.
Jadeite adds
extra features to the API including:
variable font sizes,
constructions examples,
placeholders for classes and methods, and auto-generated “See Also” links.
Additionally it
is missing some items found in standard Javadoc documentation, including:
generics type information,
“Deprecated” tags and comments,
“See Also” links,
along with other minor differences.
Please send any questions or feedback to
bam@cs.cmu.edu.
This page displays the
Jadeite version of the documention, which is derived from the offical documentation that contains this copyright notice:
The official Sun™ documentation can be found here at
http://java.sun.com/javase/6/docs/api/.