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java.lang.Objectorg.apache.commons.collections.primitives.AbstractByteCollection
org.apache.commons.collections.primitives.RandomAccessByteList
public abstract class RandomAccessByteList
Abstract base class for ByteList
s backed
by random access structures like arrays.
get(int)
and size()
. Mutable subclasses
should also override set(int, byte)
. Variably-sized
subclasses should also override add(int, byte)
and removeElementAt(int)
. All other methods
have at least some base implementation derived from
these. Subclasses may choose to override these methods
to provide a more efficient implementation.
Nested Class Summary | |
---|---|
private static class |
RandomAccessByteList.ComodChecker
|
protected static class |
RandomAccessByteList.RandomAccessByteListIterator
|
protected static class |
RandomAccessByteList.RandomAccessByteSubList
|
Field Summary | |
---|---|
private int |
_modCount
|
Constructor Summary | |
---|---|
protected |
RandomAccessByteList()
Constructs an empty list. |
Method Summary | |
---|---|
boolean |
add(byte element)
Unsupported in this base implementation. |
void |
add(int index,
byte element)
Unsupported in this implementation. |
boolean |
addAll(int index,
ByteCollection collection)
Inserts all of the elements in the specified collection into me, at the specified position (optional operation). |
boolean |
equals(java.lang.Object that)
Returns true iff that is an ByteList
that contains the same elements in the same order as me. |
abstract byte |
get(int index)
Returns the value of the element at the specified position within me. |
protected int |
getModCount()
Get my count of structural modifications. |
int |
hashCode()
Returns my hash code. |
protected void |
incrModCount()
Increment my count of structural modifications. |
int |
indexOf(byte element)
Returns the index of the first occurrence of the specified element within me, or -1 if I do not contain
the element. |
ByteIterator |
iterator()
Returns an iterator over all my elements. |
int |
lastIndexOf(byte element)
Returns the index of the last occurrence of the specified element within me, or -1 if I do not contain the element. |
ByteListIterator |
listIterator()
Returns a bidirectional iterator
over all my elements, in the appropriate sequence. |
ByteListIterator |
listIterator(int index)
Returns a bidirectional iterator
over all my elements, in the appropriate sequence,
starting at the specified position. |
byte |
removeElementAt(int index)
Unsupported in this implementation. |
byte |
set(int index,
byte element)
Unsupported in this implementation. |
abstract int |
size()
Returns the number of elements I contain. |
ByteList |
subList(int fromIndex,
int toIndex)
Returns a view of the elements within me between the specified fromIndex, inclusive, and toIndex, exclusive. |
java.lang.String |
toString()
|
Methods inherited from class org.apache.commons.collections.primitives.AbstractByteCollection |
---|
addAll, clear, contains, containsAll, isEmpty, removeAll, removeElement, retainAll, toArray, toArray |
Methods inherited from class java.lang.Object |
---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.apache.commons.collections.primitives.ByteCollection |
---|
addAll, clear, contains, containsAll, isEmpty, removeAll, removeElement, retainAll, toArray, toArray |
Field Detail |
---|
private int _modCount
Constructor Detail |
---|
protected RandomAccessByteList()
Method Detail |
---|
public abstract byte get(int index)
ByteList
get
in interface ByteList
index
- the index of the element to return
public abstract int size()
ByteCollection
size
in interface ByteCollection
size
in class AbstractByteCollection
public byte removeElementAt(int index)
removeElementAt
in interface ByteList
index
- the index of the element to remove
java.lang.UnsupportedOperationException
- since this method is not supportedpublic byte set(int index, byte element)
set
in interface ByteList
index
- the index of the element to changeelement
- the value to be stored at the specified position
java.lang.UnsupportedOperationException
- since this method is not supportedpublic void add(int index, byte element)
add
in interface ByteList
index
- the index at which to insert the elementelement
- the value to insert
java.lang.UnsupportedOperationException
- since this method is not supportedpublic boolean add(byte element)
AbstractByteCollection
add
in interface ByteCollection
add
in interface ByteList
add
in class AbstractByteCollection
element
- the value whose presence within me is to be ensured
true
iff I changed as a result of this callpublic boolean addAll(int index, ByteCollection collection)
ByteList
iterator
.
addAll
in interface ByteList
index
- the index at which to insert the first element from
the specified collectioncollection
- the ByteCollection
of elements to add
true
iff I changed as a result of this callpublic int indexOf(byte element)
ByteList
-1
if I do not contain
the element.
indexOf
in interface ByteList
element
- the element to search for
-1
if no such matching element can be foundpublic int lastIndexOf(byte element)
ByteList
lastIndexOf
in interface ByteList
element
- the element to search for
-1
if no such matching element can be foundpublic ByteIterator iterator()
ByteCollection
iterator
over all my elements.
This base interface places no constraints on the order
in which the elements are returned by the returned iterator.
iterator
in interface ByteCollection
iterator
in interface ByteList
iterator
in class AbstractByteCollection
iterator
over all my elements.public ByteListIterator listIterator()
ByteList
bidirectional iterator
over all my elements, in the appropriate sequence.
listIterator
in interface ByteList
public ByteListIterator listIterator(int index)
ByteList
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.
listIterator
in interface ByteList
public ByteList subList(int fromIndex, int toIndex)
ByteList
ByteList
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.
subList
in interface ByteList
fromIndex
- the smallest index (inclusive) in me that appears in
the returned listtoIndex
- the largest index (exclusive) in me that appears in the
returned list
public boolean equals(java.lang.Object that)
ByteList
true
iff that is an ByteList
that contains the same elements in the same order as me.
In other words, returns true
iff that is
an ByteList
that has the same size
as me,
and for which the elements returned by its
iterator
are equal (==
) to
the corresponding elements within me.
(This contract ensures that this method works properly across
different implementations of the ByteList
interface.)
equals
in interface ByteList
equals
in class java.lang.Object
that
- the object to compare to me
true
iff that is an ByteList
that contains the same elements in the same order as mepublic int hashCode()
ByteList
ByteList
is defined to be the
result of the following calculation:
int hash = 1; for(ByteIterator iter = iterator(); iter.hasNext(); ) { byte value = iter.next(); hash = 31*hash + (int)(value ^ (value >>> 32)); }This contract ensures that this method is consistent with
equals
and with the
hashCode
method of a List
of Byte
s.
hashCode
in interface ByteList
hashCode
in class java.lang.Object
public java.lang.String toString()
toString
in class java.lang.Object
protected int getModCount()
protected void incrModCount()
|
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