Class SingletonList

java.lang.Object

java.util.AbstractCollection

java.util.AbstractList

org.jaxen.util.SingletonList

All Implemented Interfaces:

Iterable, Collection, List, SequencedCollection

public class SingletonList
extends AbstractList

A utility class that implements singleton lists (to avoid dependency on JDK 1.3). Many operations including add() and remove() throw UnsupportedOperationExceptions.

Version:

1.2b12

Field Summary

Fields

Modifier and Type	Field	Description
private final Object	element

Fields inherited from class AbstractList

modCount

Constructor Summary

Constructors

Constructor	Description
SingletonList(Object element)	Creates a new singleton list.

Method Summary

Modifier and Type	Method	Description
Object	get(int index)	Returns the single element in the list.
int	size()	Returns 1.

Methods inherited from class AbstractList

add, add, addAll, clear, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, remove, removeRange, set, subList

Methods inherited from class AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface Iterable

forEach

Methods inherited from interface List

addAll, addFirst, addLast, contains, containsAll, getFirst, getLast, isEmpty, remove, removeAll, removeFirst, removeLast, replaceAll, retainAll, reversed, sort, spliterator, toArray, toArray

Field Details

element

private final Object element

Constructor Details

SingletonList

public SingletonList(Object element)

Creates a new singleton list.

Parameters:

element - the single member of the list

Method Details

size

public int size()

Returns 1.

Specified by:

size in interface Collection

Specified by:

size in interface List

Specified by:

size in class AbstractCollection

Returns:

1

get

public Object get(int index)

Returns the single element in the list.

Specified by:

get in interface List

Specified by:

get in class AbstractList

Returns:

the only element in the list

Throws:

IndexOutOfBoundsException - if index is not 0