Package org.apache.commons.collections4.iterators

Class IteratorEnumeration<E>

java.lang.Object

org.apache.commons.collections4.iterators.IteratorEnumeration<E>

Type Parameters:

E - the type of elements returned by this iterator.

All Implemented Interfaces:

Enumeration<E>

public class IteratorEnumeration<E>
extends Object
implements Enumeration<E>

Adapter to make an Iterator instance appear to be an Enumeration instance.

Since:

1.0

Constructor Summary

Constructors

Constructor	Description
IteratorEnumeration()	Constructs a new IteratorEnumeration that will not function until setIterator is invoked.
IteratorEnumeration(Iterator<? extends E> iterator)	Constructs a new IteratorEnumeration that will use the given iterator.

Method Summary

Modifier and Type	Method	Description
Iterator<? extends E>	getIterator()	Returns the underlying iterator.
boolean	hasMoreElements()	Returns true if the underlying iterator has more elements.
E	nextElement()	Returns the next element from the underlying iterator.
void	setIterator(Iterator<? extends E> iterator)	Sets the underlying iterator.

Methods inherited from class java.lang.Object

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

Constructor Details

IteratorEnumeration

public IteratorEnumeration()

Constructs a new IteratorEnumeration that will not function until setIterator is invoked.

IteratorEnumeration

public IteratorEnumeration(Iterator<? extends E> iterator)

Constructs a new IteratorEnumeration that will use the given iterator.

Parameters:

iterator - the iterator to use

Method Details

getIterator

public Iterator<? extends E> getIterator()

Returns the underlying iterator.

Returns:

the underlying iterator

hasMoreElements

public boolean hasMoreElements()

Returns true if the underlying iterator has more elements.

Specified by:

hasMoreElements in interface Enumeration<E>

Returns:

true if the underlying iterator has more elements

nextElement

public E nextElement()

Returns the next element from the underlying iterator.

Specified by:

nextElement in interface Enumeration<E>

Returns:

the next element from the underlying iterator.

Throws:

NoSuchElementException - if the underlying iterator has no more elements

setIterator

public void setIterator(Iterator<? extends E> iterator)

Sets the underlying iterator.

Parameters:

iterator - the new underlying iterator