de.intarsys.tools.collection
Class EmptyEnumeration

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

All Implemented Interfaces:

java.util.Enumeration

public class EmptyEnumeration
extends java.lang.Object
implements java.util.Enumeration

An Enumeration without elements.

Field Summary

static java.util.Enumeration

UNIQUE

Constructor Summary

protected

EmptyEnumeration() Create an emtpy enumeration

Method Summary

boolean	hasMoreElements() Return always false as an emtpy enumeration has no elements.
java.lang.Object	nextElement() Throw always exception, as an empty enumeration has no elements.

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.Enumeration UNIQUE

Constructor Detail

EmptyEnumeration

protected EmptyEnumeration()

Create an emtpy enumeration

Method Detail

hasMoreElements

public boolean hasMoreElements()

Return always false as an emtpy enumeration has no elements.

Specified by:

hasMoreElements in interface java.util.Enumeration

Returns:

Return always false as an emtpy enumeration has no elements.

nextElement

public java.lang.Object nextElement()

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

Specified by:

nextElement in interface java.util.Enumeration

Returns:

never

Throws:

java.util.NoSuchElementException - Is thrown always