org.apache.commons.collections.primitives.adapters

Class AbstractCollectionByteCollection

java.lang.Object

org.apache.commons.collections.primitives.adapters.AbstractCollectionByteCollection

All Implemented Interfaces:

ByteCollection

Direct Known Subclasses:

AbstractListByteList, CollectionByteCollection, NonSerializableCollectionByteCollection

abstract class AbstractCollectionByteCollection
extends java.lang.Object
implements ByteCollection

Since:

Commons Collections 2.2

Version:

$Revision: 1.1 $ $Date: 2003/10/13 22:46:48 $

Author:

Rodney Waldhoff

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractCollectionByteCollection()

Method Summary

Modifier and Type	Method and Description
boolean	add(byte element) Ensures that I contain the specified element (optional operation).
boolean	addAll(ByteCollection c) Adds all of the elements in the specified collection to me (optional operation).
void	clear() Removes all my elements (optional operation).
boolean	contains(byte element) Returns true iff I contain the specified element.
boolean	containsAll(ByteCollection c) Returns true iff I contain all of the elements in the given collection.
protected abstract java.util.Collection	getCollection()
boolean	isEmpty() Returns true iff I contain no elements.
ByteIterator	iterator() wraps the Iterator returned by my underlying Collection, if any.
boolean	removeAll(ByteCollection c) Removes all of my elements that are contained in the specified collection (optional operation).
boolean	removeElement(byte element) Removes a single occurrence of the specified element (optional operation).
boolean	retainAll(ByteCollection c) Removes all of my elements that are not contained in the specified collection (optional operation).
int	size() Returns the number of elements I contain.
byte[]	toArray() Returns an array containing all of my elements.
byte[]	toArray(byte[] dest) Returns an array containing all of my elements, using the given array if it is large enough.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractCollectionByteCollection

protected AbstractCollectionByteCollection()

Method Detail

add

public boolean add(byte element)

Description copied from interface: ByteCollection

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 ByteCollection

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 boolean addAll(ByteCollection c)

Description copied from interface: ByteCollection

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

Specified by:

addAll in interface ByteCollection

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 void clear()

Description copied from interface: ByteCollection

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

Specified by:

clear in interface ByteCollection

contains

public boolean contains(byte element)

Description copied from interface: ByteCollection

Returns true iff I contain the specified element.

Specified by:

contains in interface ByteCollection

Parameters:

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

Returns:

true iff I contain the specified element

containsAll

public boolean containsAll(ByteCollection c)

Description copied from interface: ByteCollection

Returns true iff I contain all of the elements in the given collection.

Specified by:

containsAll in interface ByteCollection

Parameters:

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

Returns:

true iff I contain the all the specified elements

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

isEmpty

public boolean isEmpty()

Description copied from interface: ByteCollection

Returns true iff I contain no elements.

Specified by:

isEmpty in interface ByteCollection

Returns:

true iff I contain no elements.

iterator

public ByteIterator iterator()

wraps the Iterator returned by my underlying Collection, if any.

Specified by:

iterator in interface ByteCollection

Returns:

an iterator over all my elements.

removeElement

public boolean removeElement(byte element)

Description copied from interface: ByteCollection

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

Specified by:

removeElement in interface ByteCollection

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

removeAll

public boolean removeAll(ByteCollection c)

Description copied from interface: ByteCollection

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 ByteCollection

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

retainAll

public boolean retainAll(ByteCollection c)

Description copied from interface: ByteCollection

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 ByteCollection

Parameters:

c - the collection of elements to retain

Returns:

true iff I changed as a result of this call

size

public int size()

Description copied from interface: ByteCollection

Returns the number of elements I contain.

Specified by:

size in interface ByteCollection

Returns:

the number of elements I contain

toArray

public byte[] toArray()

Description copied from interface: ByteCollection

Returns an array containing all of my elements. The length of the returned array will be equal to my size.

The returned array will be independent of me, so that callers may modify that returned array without modifying this collection.

When I guarantee the order in which elements are returned by an iterator, the returned array will contain elements in the same order.

Specified by:

toArray in interface ByteCollection

Returns:

an array containing all my elements

toArray

public byte[] toArray(byte[] dest)

Description copied from interface: ByteCollection

Returns an array containing all of my elements, using the given array if it is large enough. When the length of the given array is larger than the number of elements I contain, values outside of my range will be unchanged.

The returned array will be independent of me, so that callers may modify that returned array without modifying this collection.

When I guarantee the order in which elements are returned by an iterator, the returned array will contain elements in the same order.

Specified by:

toArray in interface ByteCollection

Parameters:

dest - an array that may be used to contain the elements

Returns:

an array containing all my elements

getCollection

protected abstract java.util.Collection getCollection()