de.intarsys.tools.collection
Class EmptyIterator

java.lang.Object
  de.intarsys.tools.collection.EmptyIterator

All Implemented Interfaces:

java.util.Iterator

public class EmptyIterator
extends java.lang.Object
implements java.util.Iterator

An Iterator over an empty collection.

Field Summary

static java.util.Iterator

UNIQUE

Constructor Summary

protected

EmptyIterator() Create an EmptyIterator.

Method Summary

boolean	hasNext() Return always false as an emtpy iterator has no elements.
java.lang.Object	next() Throw always exception, as an empty enumeration has no elements.
void	remove()

Methods inherited from class java.lang.Object

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

Field Detail

UNIQUE

public static final java.util.Iterator UNIQUE

Constructor Detail

EmptyIterator

protected EmptyIterator()

Create an EmptyIterator.

Method Detail

hasNext

public boolean hasNext()

Return always false as an emtpy iterator has no elements.

Specified by:

hasNext in interface java.util.Iterator

Returns:

Return always false as an emtpy iterator has no elements.

next

public java.lang.Object next()

Throw always exception, as an empty enumeration has no elements.

Specified by:

next in interface java.util.Iterator

Returns:

never

Throws:

java.util.NoSuchElementException - Is thrown always

remove

public void remove()

Specified by:

remove in interface java.util.Iterator