public class ArrayListIterator<E> extends ArrayIterator<E> implements ResettableListIterator<E>
ListIterator over an array.
The array can be either an array of object or of primitives. If you know
that you have an object array, the ObjectArrayListIterator
class is a better choice, as it will perform better.
This iterator does not support add(Object) or ArrayIterator.remove(), as the array
cannot be changed in size. The set(Object) method is supported however.
ArrayIterator,
Iterator,
ListIterator| Constructor and Description |
|---|
ArrayListIterator(Object array)
Constructs an ArrayListIterator that will iterate over the values in the
specified array.
|
ArrayListIterator(Object array,
int startIndex)
Constructs an ArrayListIterator that will iterate over the values in the
specified array from a specific start index.
|
ArrayListIterator(Object array,
int startIndex,
int endIndex)
Construct an ArrayListIterator that will iterate over a range of values
in the specified array.
|
| Modifier and Type | Method and Description |
|---|---|
void |
add(Object o)
This iterator does not support modification of its backing collection, and so will
always throw an
UnsupportedOperationException when this method is invoked. |
boolean |
hasPrevious()
Returns true if there are previous elements to return from the array.
|
E |
next()
Gets the next element from the array.
|
int |
nextIndex()
Gets the next index to be retrieved.
|
E |
previous()
Gets the previous element from the array.
|
int |
previousIndex()
Gets the index of the item to be retrieved if
previous() is called. |
void |
reset()
Resets the iterator back to the start index.
|
void |
set(Object o)
Sets the element under the cursor.
|
checkBound, getArray, getEndIndex, getStartIndex, hasNext, removeclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waithasNext, removepublic ArrayListIterator(Object array)
array - the array to iterate overIllegalArgumentException - if array is not an array.NullPointerException - if array is nullpublic ArrayListIterator(Object array, int startIndex)
array - the array to iterate overstartIndex - the index to start iterating atIllegalArgumentException - if array is not an array.NullPointerException - if array is nullIndexOutOfBoundsException - if the start index is out of boundspublic ArrayListIterator(Object array, int startIndex, int endIndex)
array - the array to iterate overstartIndex - the index to start iterating atendIndex - the index (exclusive) to finish iterating atIllegalArgumentException - if array is not an array.IndexOutOfBoundsException - if the start or end index is out of boundsIllegalArgumentException - if end index is before the startNullPointerException - if array is nullpublic boolean hasPrevious()
hasPrevious in interface ListIterator<E>hasPrevious in interface OrderedIterator<E>public E previous()
previous in interface ListIterator<E>previous in interface OrderedIterator<E>NoSuchElementException - if there is no previous elementpublic E next()
next in interface Iterator<E>next in interface ListIterator<E>next in class ArrayIterator<E>NoSuchElementException - if there is no next elementpublic int nextIndex()
nextIndex in interface ListIterator<E>public int previousIndex()
previous() is called.previousIndex in interface ListIterator<E>public void add(Object o)
UnsupportedOperationException when this method is invoked.add in interface ListIterator<E>o - the element to addUnsupportedOperationException - always thrown.ListIterator.set(E)public void set(Object o)
This method sets the element that was returned by the last call
to next() of previous().
Note: ListIterator implementations that support
add() and remove() only allow set() to be called
once per call to next() or previous (see the ListIterator
javadoc for more details). Since this implementation does
not support add() or remove(), set() may be
called as often as desired.
set in interface ListIterator<E>o - the element to setIllegalStateException - if next() or previous() has not been called
before set(Object)ListIterator.set(E)public void reset()
reset in interface ResettableIterator<E>reset in class ArrayIterator<E>Copyright © 2001–2013 The Apache Software Foundation. All rights reserved.