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org.mortbay.util
Class SingletonList  

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractList
          org.mortbay.util.SingletonList

All Implemented Interfaces:

java.util.Collection, java.lang.Iterable, java.util.List

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public class SingletonList

extends java.util.AbstractList

Singleton List. This simple efficient implementation of a List with a single element is provided for JDK 1.2 JVMs, which do not provide the Collections.singletonList method.

Version:

$Revision: 1.2 $

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Nested Class Summary
private  class	SingletonList.SIterator

 

Nested classes inherited from class java.util.AbstractList

 

Field Summary
private  java.lang.Object	o

 

Fields inherited from class java.util.AbstractList

modCount

 

Constructor Summary
private	SingletonList(java.lang.Object o)

 

Method Summary
java.lang.Object	get(int i)           Returns the elements at the specified position in the list.
java.util.Iterator	iterator()           Obtain an Iterator over this list, whose sequence is the list order.
java.util.ListIterator	listIterator()           Obtain a ListIterator over this list, starting at the beginning.
java.util.ListIterator	listIterator(int i)           Obtain a ListIterator over this list, starting at a given position.
static SingletonList	newSingletonList(java.lang.Object o)
int	size()           Get the number of elements in this list.

 

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, equals, hashCode, indexOf, lastIndexOf, 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, retainAll, toArray, toArray

 

Field Detail

o

private java.lang.Object o

Constructor Detail

SingletonList

private SingletonList(java.lang.Object o)

Method Detail

newSingletonList

public static SingletonList newSingletonList(java.lang.Object o)

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get

public java.lang.Object get(int i)

Description copied from class: java.util.AbstractList

Returns the elements at the specified position in the list.

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size

public int size()

Description copied from interface: java.util.List

Get the number of elements in this list. If the list contains more than Integer.MAX_VALUE elements, return Integer.MAX_VALUE.

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listIterator

public java.util.ListIterator listIterator()

Description copied from class: java.util.AbstractList

Obtain a ListIterator over this list, starting at the beginning. This implementation returns listIterator(0).

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listIterator

public java.util.ListIterator listIterator(int i)

Description copied from class: java.util.AbstractList

Obtain a ListIterator over this list, starting at a given position. A first call to next() would return the same as get(index), and a first call to previous() would return the same as get(index - 1).

This implementation uses size(), get(int), set(int, Object), add(int, Object), and remove(int) of the backing list, and does not support remove, set, or add unless the list does. This implementation is fail-fast if you correctly maintain modCount.

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iterator

public java.util.Iterator iterator()

Description copied from class: java.util.AbstractList

Obtain an Iterator over this list, whose sequence is the list order. This implementation uses size(), get(int), and remove(int) of the backing list, and does not support remove unless the list does. This implementation is fail-fast if you correctly maintain modCount. Also, this implementation is specified by Sun to be distinct from listIterator, although you could easily implement it as return listIterator(0).

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