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## com.compoze.collab.util
Class EmptyList

    java.lang.Object
      com.compoze.collab.util.EmptyList

All Implemented Interfaces
  Iterable, Collection, List

    public class EmptyList

extends Object
implements List

An always-empty List. A Singleton. Use `i()` to retrieve the instance. All methods that would add objects to this list throw `UnsupportedOperationException`. Most methods that remove objects are supported, but indicate that nothing was removed.

Method Summary
`void` | `add(int index, Object element)`
`boolean` | `add(Object o)`
`boolean` | `addAll(Collection c)`
`boolean` | `addAll(int index, Collection c)`
`void` | `clear()`
`boolean` | `contains(Object o)`
`boolean` | `containsAll(Collection c)`
`Object` | `get(int index)`
`static EmptyList` | `i()` Get the instance.
`int` | `indexOf(Object o)`
`boolean` | `isEmpty()`
`Iterator` | `iterator()`
`int` | `lastIndexOf(Object o)`
`ListIterator` | `listIterator()`
`ListIterator` | `listIterator(int index)`
`Object` | `remove(int index)`
`boolean` | `remove(Object o)`
`boolean` | `removeAll(Collection c)`
`boolean` | `retainAll(Collection c)`
`Object` | `set(int index, Object element)`
`int` | `size()`
`List` | `subList(int fromIndex, int toIndex)`
`Object[]` | `toArray()`
`Object[]` | `toArray(Object[] a)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface java.util.List
`equals, hashCode`

Method Detail

### i

    public static EmptyList i()

  Get the instance.

  Returns
    the EmptyList instance

### size

    public int size()

  Specified by:
    `size` in interface `Collection`
  Specified by:
    `size` in interface `List`

### isEmpty

    public boolean isEmpty()

  Specified by:
    `isEmpty` in interface `Collection`
  Specified by:
    `isEmpty` in interface `List`

### contains

    public boolean contains(Object o)

  Specified by:
    `contains` in interface `Collection`
  Specified by:
    `contains` in interface `List`

### iterator

    public Iterator iterator()

  Specified by:
    `iterator` in interface `Iterable`
  Specified by:
    `iterator` in interface `Collection`
  Specified by:
    `iterator` in interface `List`

### toArray

    public Object[] toArray()

  Specified by:
    `toArray` in interface `Collection`
  Specified by:
    `toArray` in interface `List`

### toArray

    public Object[] toArray(Object[] a)

  Specified by:
    `toArray` in interface `Collection`
  Specified by:
    `toArray` in interface `List`

### add

    public boolean add(Object o)

  Specified by:
    `add` in interface `Collection`
  Specified by:
    `add` in interface `List`

### remove

    public boolean remove(Object o)

  Specified by:
    `remove` in interface `Collection`
  Specified by:
    `remove` in interface `List`

### containsAll

    public boolean containsAll(Collection c)

  Specified by:
    `containsAll` in interface `Collection`
  Specified by:
    `containsAll` in interface `List`

### addAll

    public boolean addAll(Collection c)

  Specified by:
    `addAll` in interface `Collection`
  Specified by:
    `addAll` in interface `List`

### addAll

    public boolean addAll(int index,
                          Collection c)

  Specified by:
    `addAll` in interface `List`

### removeAll

    public boolean removeAll(Collection c)

  Specified by:
    `removeAll` in interface `Collection`
  Specified by:
    `removeAll` in interface `List`

### retainAll

    public boolean retainAll(Collection c)

  Specified by:
    `retainAll` in interface `Collection`
  Specified by:
    `retainAll` in interface `List`

### clear

    public void clear()

  Specified by:
    `clear` in interface `Collection`
  Specified by:
    `clear` in interface `List`

### get

    public Object get(int index)

  Specified by:
    `get` in interface `List`

### set

    public Object set(int index,
                      Object element)

  Specified by:
    `set` in interface `List`

### add

    public void add(int index,
                    Object element)

  Specified by:
    `add` in interface `List`

### remove

    public Object remove(int index)

  Specified by:
    `remove` in interface `List`

### indexOf

    public int indexOf(Object o)

  Specified by:
    `indexOf` in interface `List`

### lastIndexOf

    public int lastIndexOf(Object o)

  Specified by:
    `lastIndexOf` in interface `List`

### listIterator

    public ListIterator listIterator()

  Specified by:
    `listIterator` in interface `List`

### listIterator

    public ListIterator listIterator(int index)

  Specified by:
    `listIterator` in interface `List`

### subList

    public List subList(int fromIndex,
                        int toIndex)

  Specified by:
    `subList` in interface `List`

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Copyright © 2006 BEA Systems, Inc. All Rights Reserved