de.intarsys.tools.collection

Class EmptyEnumeration

java.lang.Object

de.intarsys.tools.collection.EmptyEnumeration

All Implemented Interfaces:

Enumeration

public class EmptyEnumeration
extends Object
implements Enumeration

An Enumeration without elements.

Field Summary

Fields

Modifier and Type	Field and Description
static Enumeration	UNIQUE

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasMoreElements() Return always false as an emtpy enumeration has no elements.
Object	nextElement() Throw always exception, as an empty enumeration has no elements.

Methods inherited from class java.lang.Object

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

Field Detail

UNIQUE

public static final Enumeration UNIQUE

Method Detail

hasMoreElements

public boolean hasMoreElements()

Return always false as an emtpy enumeration has no elements.

Specified by:

hasMoreElements in interface Enumeration

Returns:

Return always false as an emtpy enumeration has no elements.

nextElement

public Object nextElement()

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

Specified by:

nextElement in interface Enumeration

Returns:

never

Throws:

NoSuchElementException - Is thrown always