org.jikesrvm.util

Class EmptyIterator<T>

java.lang.Object

org.jikesrvm.util.EmptyIterator<T>

All Implemented Interfaces:

Iterator<T>

public final class EmptyIterator<T>
extends Object
implements Iterator<T>

A generic iterator containing no items.

NOTE: This class is only necessary until Java 7. Java 7's Collections class provides an emptyIterator() method.

TODO Remove this class when we require Java 7 to build and all supported class libraries support Java 7.

Field Summary

Fields

Modifier and Type	Field and Description
private static EmptyIterator<?>	INSTANCE

Constructor Summary

Constructors

Modifier	Constructor and Description
private	EmptyIterator() Clients must use getInstance() to obtain an instance.

Method Summary

Modifier and Type	Method and Description
static <U> Iterator<U>	getInstance()
boolean	hasNext()
T	next()
void	remove()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

INSTANCE

private static final EmptyIterator<?> INSTANCE

Constructor Detail

EmptyIterator

private EmptyIterator()

Clients must use getInstance() to obtain an instance.

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

remove

public void remove()

Specified by:

remove in interface Iterator<T>

getInstance

public static <U> Iterator<U> getInstance()