NullArrayIterator

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diva.util
Class NullArrayIterator

java.lang.Object
 extended bydiva.util.IteratorAdapter
 extended bydiva.util.NullArrayIterator

All Implemented Interfaces:: java.util.Iterator

Direct Known Subclasses:: FilteredArrayIterator

public class NullArrayIterator
extends IteratorAdapter

An iterator over a given array which may contain nulls. Any element of the array that is null is not returned, but is skipped over. A null value (of the whole array) is treated as an empty array. This class can be subclassed to implement the remove() method. The method getLastIndex() return the index of the previously returned element.

Version:: $Id: NullArrayIterator.java,v 1.8 2005年07月08日 19:55:17 cxh Exp $
Author:: John Reekie

Constructor Summary
`NullArrayIterator(java.lang.Object[] array)` Construct an iterator over the given array
`NullArrayIterator(java.lang.Object[] array, int length)` Construct an iterator over the given array, where the effective array length is given by the length argument (and must be smaller than the real length of the array).

Method Summary
`protected void`	`advance()` Advance the next index to the next non-null element.
`protected int`	`getLastIndex()` Return the index of the element last returned.
`boolean`	`hasNext()` Return true if there are more non-null elements in the array.
`java.lang.Object`	`next()` Return the next non-null element in the array.

Methods inherited from class diva.util.IteratorAdapter

remove

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NullArrayIterator

public NullArrayIterator(java.lang.Object[] array)

Construct an iterator over the given array

NullArrayIterator

public NullArrayIterator(java.lang.Object[] array,
 int length)

Construct an iterator over the given array, where the effective array length is given by the length argument (and must be smaller than the real length of the array).

Method Detail