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java.lang.Objectorg.apache.commons.collections15.iterators.ObjectArrayIterator<E>
public class ObjectArrayIterator<E>
An Iterator over an array of objects.
remove(), as the object array cannot be
structurally modified.
The iterator implements a reset() method, allowing the reset of the iterator
back to the start if required.
| Field Summary | |
|---|---|
protected E[] |
array
The array |
protected int |
endIndex
The end index to loop to |
protected int |
index
The current iterator index |
protected int |
startIndex
The start index to loop from |
| Constructor Summary | |
|---|---|
ObjectArrayIterator()
Constructor for use with setArray. |
|
ObjectArrayIterator(E[] array)
Constructs an ObjectArrayIterator that will iterate over the values in the specified array. |
|
ObjectArrayIterator(E[] array,
int start)
Constructs an ObjectArrayIterator that will iterate over the values in the specified array from a specific start index. |
|
ObjectArrayIterator(E[] array,
int start,
int end)
Construct an ObjectArrayIterator that will iterate over a range of values in the specified array. |
|
| Method Summary | |
|---|---|
E[] |
getArray()
Gets the array that this iterator is iterating over. |
int |
getEndIndex()
Gets the end index to loop to. |
int |
getStartIndex()
Gets the start index to loop from. |
boolean |
hasNext()
Returns true if there are more elements to return from the array. |
E |
next()
Returns the next element in the array. |
void |
remove()
Throws UnsupportedOperationException. |
void |
reset()
Resets the iterator back to the start index. |
void |
setArray(E[] array)
Sets the array that the ArrayIterator should iterate over. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected E[] array
protected int startIndex
protected int endIndex
protected int index
| Constructor Detail |
|---|
public ObjectArrayIterator()
setArray.
Using this constructor, the iterator is equivalent to an empty iterator
until setArray(E[]) is called to establish the array to iterate over.
public ObjectArrayIterator(E[] array)
array - the array to iterate over
NullPointerException - if array is null
public ObjectArrayIterator(E[] array,
int start)
array - the array to iterate overstart - the index to start iterating at
NullPointerException - if array is null
IndexOutOfBoundsException - if the start index is out of bounds
public ObjectArrayIterator(E[] array,
int start,
int end)
array - the array to iterate overstart - the index to start iterating atend - the index (exclusive) to finish iterating at
IndexOutOfBoundsException - if the start or end index is out of bounds
IllegalArgumentException - if end index is before the start
NullPointerException - if array is null| Method Detail |
|---|
public boolean hasNext()
hasNext in interface Iterator<E>public E next()
next in interface Iterator<E>NoSuchElementException - if all the elements in the array
have already been returnedpublic void remove()
UnsupportedOperationException.
remove in interface Iterator<E>UnsupportedOperationException - alwayspublic E[] getArray()
null if
the no-arg constructor was used and setArray(E[]) has never
been called with a valid array.public void setArray(E[] array)
reset() method can be used to reset the iterator if required.
array - the array that the iterator should iterate over
IllegalStateException - if the array was set in the constructor
NullPointerException - if array is nullpublic int getStartIndex()
public int getEndIndex()
public void reset()
reset in interface ResettableIterator<E>
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