org.apache.commons.collections.primitives.decorators
Class BaseUnmodifiableCharList

java.lang.Object
  org.apache.commons.collections.primitives.decorators.BaseProxyCharCollection
      org.apache.commons.collections.primitives.decorators.BaseProxyCharList
          org.apache.commons.collections.primitives.decorators.BaseUnmodifiableCharList

All Implemented Interfaces:

CharCollection, CharList

Direct Known Subclasses:

NonSerializableUnmodifiableCharList, UnmodifiableCharList

abstract class BaseUnmodifiableCharList
extends BaseProxyCharList

Since:

Commons Primitives 1.0

Version:

$Revision: 1.1 $ $Date: 2003/10/29 19:20:07 $

Author:

Rodney Waldhoff

Constructor Summary

BaseUnmodifiableCharList()

Method Summary

boolean	add(char element) Ensures that I contain the specified element (optional operation).
void	add(int index, char element) Inserts the specified element at the specified position (optional operation).
boolean	addAll(CharCollection c) Adds all of the elements in the specified collection to me (optional operation).
boolean	addAll(int index, CharCollection collection) Inserts all of the elements in the specified collection into me, at the specified position (optional operation).
void	clear() Removes all my elements (optional operation).
CharIterator	iterator() Returns an iterator over all my elements.
CharListIterator	listIterator() Returns a bidirectional iterator over all my elements, in the appropriate sequence.
CharListIterator	listIterator(int index) Returns a bidirectional iterator over all my elements, in the appropriate sequence, starting at the specified position.
boolean	removeAll(CharCollection c) Removes all of my elements that are contained in the specified collection (optional operation).
boolean	removeElement(char element) Removes a single occurrence of the specified element (optional operation).
char	removeElementAt(int index) Removes the element at the specified position in (optional operation).
boolean	retainAll(CharCollection c) Removes all of my elements that are not contained in the specified collection (optional operation).
char	set(int index, char element) Replaces the element at the specified position in me with the specified element (optional operation).
CharList	subList(int fromIndex, int toIndex) Returns a view of the elements within me between the specified fromIndex, inclusive, and toIndex, exclusive.

Methods inherited from class org.apache.commons.collections.primitives.decorators.BaseProxyCharList

get, getProxiedCollection, getProxiedList, indexOf, lastIndexOf

Methods inherited from class org.apache.commons.collections.primitives.decorators.BaseProxyCharCollection

contains, containsAll, equals, hashCode, isEmpty, size, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.collections.primitives.CharList

equals, hashCode

Methods inherited from interface org.apache.commons.collections.primitives.CharCollection

contains, containsAll, isEmpty, size, toArray, toArray

Constructor Detail

BaseUnmodifiableCharList

BaseUnmodifiableCharList()

Method Detail

add

public final void add(int index,
                      char element)

Description copied from interface: CharList

Inserts the specified element at the specified position (optional operation). Shifts the element currently at that position (if any) and any subsequent elements to the right, increasing their indices.

Specified by:

add in interface CharList

Overrides:

add in class BaseProxyCharList

Parameters:

index - the index at which to insert the element

element - the value to insert

addAll

public final boolean addAll(int index,
                            CharCollection collection)

Description copied from interface: CharList

Inserts all of the elements in the specified collection into me, at the specified position (optional operation). Shifts the element currently at that position (if any) and any subsequent elements to the right, increasing their indices. The new elements will appear in the order that they are returned by the given collection's iterator.

Specified by:

addAll in interface CharList

Overrides:

addAll in class BaseProxyCharList

Parameters:

index - the index at which to insert the first element from the specified collection

collection - the CharCollection of elements to add

Returns:

true iff I changed as a result of this call

removeElementAt

public final char removeElementAt(int index)

Description copied from interface: CharList

Removes the element at the specified position in (optional operation). Any subsequent elements are shifted to the left, subtracting one from their indices. Returns the element that was removed.

Specified by:

removeElementAt in interface CharList

Overrides:

removeElementAt in class BaseProxyCharList

Parameters:

index - the index of the element to remove

Returns:

the value of the element that was removed

set

public final char set(int index,
                      char element)

Description copied from interface: CharList

Replaces the element at the specified position in me with the specified element (optional operation).

Specified by:

set in interface CharList

Overrides:

set in class BaseProxyCharList

Parameters:

index - the index of the element to change

element - the value to be stored at the specified position

Returns:

the value previously stored at the specified position

add

public final boolean add(char element)

Description copied from interface: CharCollection

Ensures that I contain the specified element (optional operation). Returns true iff I changed as a result of this call.

If a collection refuses to add the specified element for any reason other than that it already contains the element, it must throw an exception (rather than simply returning false). This preserves the invariant that a collection always contains the specified element after this call returns.

Specified by:

add in interface CharCollection

Specified by:

add in interface CharList

Overrides:

add in class BaseProxyCharCollection

Parameters:

element - the value whose presence within me is to be ensured

Returns:

true iff I changed as a result of this call

addAll

public final boolean addAll(CharCollection c)

Description copied from interface: CharCollection

Adds all of the elements in the specified collection to me (optional operation).

Specified by:

addAll in interface CharCollection

Overrides:

addAll in class BaseProxyCharCollection

Parameters:

c - the collection of elements whose presence within me is to be ensured

Returns:

true iff I changed as a result of this call

clear

public final void clear()

Description copied from interface: CharCollection

Removes all my elements (optional operation). I will be empty after this method successfully returns.

Specified by:

clear in interface CharCollection

Overrides:

clear in class BaseProxyCharCollection

removeAll

public final boolean removeAll(CharCollection c)

Description copied from interface: CharCollection

Removes all of my elements that are contained in the specified collection (optional operation). The behavior of this method is unspecified if the given collection is modified while this method is executing. Note that this includes the case in which the given collection is this collection, and it is not empty.

Specified by:

removeAll in interface CharCollection

Overrides:

removeAll in class BaseProxyCharCollection

Parameters:

c - the collection of elements to remove

Returns:

true iff I contained the at least one of the specified elements, in other words, returns true iff I changed as a result of this call

removeElement

public final boolean removeElement(char element)

Description copied from interface: CharCollection

Removes a single occurrence of the specified element (optional operation).

Specified by:

removeElement in interface CharCollection

Overrides:

removeElement in class BaseProxyCharCollection

Parameters:

element - the element to remove, if present

Returns:

true iff I contained the specified element, in other words, iff I changed as a result of this call

retainAll

public final boolean retainAll(CharCollection c)

Description copied from interface: CharCollection

Removes all of my elements that are not contained in the specified collection (optional operation). (In other words, retains only my elements that are contained in the specified collection.) The behavior of this method is unspecified if the given collection is modified while this method is executing.

Specified by:

retainAll in interface CharCollection

Overrides:

retainAll in class BaseProxyCharCollection

Parameters:

c - the collection of elements to retain

Returns:

true iff I changed as a result of this call

subList

public final CharList subList(int fromIndex,
                              int toIndex)

Description copied from interface: CharList

Returns a view of the elements within me between the specified fromIndex, inclusive, and toIndex, exclusive. The returned CharList is backed by me, so that any changes in the returned list are reflected in me, and vice-versa. The returned list supports all of the optional operations that I support.

Note that when fromIndex == toIndex, the returned list is initially empty, and when fromIndex == 0 && toIndex == size() the returned list is my "improper" sublist, containing all my elements.

The semantics of the returned list become undefined if I am structurally modified in any way other than via the returned list.

Specified by:

subList in interface CharList

Overrides:

subList in class BaseProxyCharList

Parameters:

fromIndex - the smallest index (inclusive) in me that appears in the returned list

toIndex - the largest index (exclusive) in me that appears in the returned list

Returns:

a view of this list from fromIndex (inclusive) to toIndex (exclusive)

iterator

public final CharIterator iterator()

Description copied from interface: CharCollection

Returns an iterator over all my elements. This base interface places no constraints on the order in which the elements are returned by the returned iterator.

Specified by:

iterator in interface CharCollection

Specified by:

iterator in interface CharList

Overrides:

iterator in class BaseProxyCharCollection

Returns:

an iterator over all my elements.

listIterator

public CharListIterator listIterator()

Description copied from interface: CharList

Returns a bidirectional iterator over all my elements, in the appropriate sequence.

Specified by:

listIterator in interface CharList

Overrides:

listIterator in class BaseProxyCharList

listIterator

public CharListIterator listIterator(int index)

Description copied from interface: CharList

Returns a bidirectional iterator over all my elements, in the appropriate sequence, starting at the specified position. The specified index indicates the first element that would be returned by an initial call to the next method. An initial call to the previous method would return the element with the specified index minus one.

Specified by:

listIterator in interface CharList

Overrides:

listIterator in class BaseProxyCharList