org.jaxen.util

Class SingletonList

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList

org.jaxen.util.SingletonList

All Implemented Interfaces:

Iterable, Collection, List

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

Author:

Attila Szegedi

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class java.util.AbstractList

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

Methods inherited from class java.util.AbstractCollection

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.List

addAll, contains, containsAll, isEmpty, remove, removeAll, replaceAll, retainAll, sort, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

SingletonList

public SingletonList(Object element)

Creates a new singleton list.

Parameters:

element - the single member of the list

Method Detail

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