public abstract static class CharCollections.EmptyCollection extends AbstractCharCollection
This class may be useful to implement your own in case you subclass a type-specific collection.
Modifier and Type | Method and Description |
---|---|
boolean |
add(char k) |
boolean |
addAll(CharCollection c)
Adds all elements of the given type-specific collection to this collection.
|
void |
clear() |
boolean |
contains(char k) |
boolean |
containsAll(CharCollection c)
Checks whether this collection contains all elements from the given type-specific collection.
|
boolean |
equals(Object o) |
int |
hashCode() |
CharBidirectionalIterator |
iterator()
Returns a type-specific iterator on the elements of this collection.
|
boolean |
rem(char k)
|
boolean |
removeAll(CharCollection c)
Remove from this collection all elements in the given type-specific collection.
|
boolean |
retainAll(CharCollection c)
Retains in this collection only elements from the given type-specific collection.
|
int |
size() |
Object[] |
toArray() |
char[] |
toCharArray()
Returns a primitive type array containing the items of this collection.
|
char[] |
toCharArray(char[] a)
Returns a primitive type array containing the items of this collection.
|
add, addAll, charIterator, contains, containsAll, isEmpty, rem, remove, removeAll, retainAll, toArray, toArray, toString
public boolean add(char k)
add
in interface CharCollection
add
in class AbstractCharCollection
Collection.add(Object)
public boolean contains(char k)
contains
in interface CharCollection
contains
in class AbstractCharCollection
Collection.contains(Object)
public Object[] toArray()
toArray
in interface Collection<Character>
toArray
in class AbstractCharCollection
public char[] toCharArray(char[] a)
CharCollection
Note that, contrarily to Collection.toArray(Object[])
, this
methods just writes all elements of this collection: no special
value will be added after the last one.
toCharArray
in interface CharCollection
toCharArray
in class AbstractCharCollection
a
- if this array is big enough, it will be used to store this collection.Collection.toArray(Object[])
public char[] toCharArray()
CharCollection
toCharArray
in interface CharCollection
toCharArray
in class AbstractCharCollection
Collection.toArray()
public boolean rem(char k)
CharCollection
remove()
, but the clash
with the similarly named index-based method in the List
interface
forces us to use a distinguished name. For simplicity, the set interfaces reinstates
remove()
.rem
in interface CharCollection
rem
in class AbstractCharCollection
Collection.remove(Object)
public boolean addAll(CharCollection c)
AbstractCharCollection
addAll
in interface CharCollection
addAll
in class AbstractCharCollection
c
- a type-specific collection.true
if this collection changed as a result of the call.Collection.addAll(Collection)
public boolean removeAll(CharCollection c)
AbstractCharCollection
removeAll
in interface CharCollection
removeAll
in class AbstractCharCollection
c
- a type-specific collection.true
if this collection changed as a result of the call.Collection.removeAll(Collection)
public boolean retainAll(CharCollection c)
AbstractCharCollection
retainAll
in interface CharCollection
retainAll
in class AbstractCharCollection
c
- a type-specific collection.true
if this collection changed as a result of the call.Collection.retainAll(Collection)
public boolean containsAll(CharCollection c)
AbstractCharCollection
containsAll
in interface CharCollection
containsAll
in class AbstractCharCollection
c
- a type-specific collection.true
if this collection contains all elements of the argument.Collection.containsAll(Collection)
public CharBidirectionalIterator iterator()
CharCollection
Note that this specification strengthens the one given in
Iterable.iterator()
, which was already
strengthened in the corresponding type-specific class,
but was weakened by the fact that this interface extends Collection
.
iterator
in interface CharCollection
iterator
in interface CharIterable
iterator
in interface Iterable<Character>
iterator
in interface Collection<Character>
iterator
in class AbstractCharCollection
public int size()
size
in interface Collection<Character>
size
in class AbstractCollection<Character>
public void clear()
clear
in interface Collection<Character>
clear
in class AbstractCollection<Character>
public int hashCode()
hashCode
in interface Collection<Character>
hashCode
in class Object