java.lang.Object
- it.unimi.dsi.fastutil.chars.CharCollections.UnmodifiableCollection

All Implemented Interfaces:

CharCollection, CharIterable, Serializable, Iterable<Character>, Collection<Character>

Direct Known Subclasses:

CharBigLists.UnmodifiableBigList, CharLists.UnmodifiableList, CharSets.UnmodifiableSet

Enclosing class:

CharCollections
```
public static class CharCollections.UnmodifiableCollection
extends Object
implements CharCollection, Serializable
```
An unmodifiable wrapper class for collections.

See Also:

Serialized Form

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`boolean`	`add(char k)`	Ensures that this collection contains the specified element (optional operation).
`boolean`	`add(Character k)`	Deprecated.
`boolean`	`addAll(CharCollection c)`	Adds all elements of the given type-specific collection to this collection.
`boolean`	`addAll(Collection<? extends Character> c)`
`void`	`clear()`
`boolean`	`contains(char o)`	Returns `true` if this collection contains the specified element.
`boolean`	`contains(Object k)`	Deprecated.
`boolean`	`containsAll(CharCollection c)`	Checks whether this collection contains all elements from the given type-specific collection.
`boolean`	`containsAll(Collection<?> c)`
`boolean`	`equals(Object o)`
`int`	`hashCode()`
`boolean`	`isEmpty()`
`CharIterator`	`iterator()`	Returns a type-specific iterator on the elements of this collection.
`boolean`	`rem(char k)`	Removes a single instance of the specified element from this collection, if it is present (optional operation).
`boolean`	`remove(Object k)`	Deprecated.
`boolean`	`removeAll(CharCollection c)`	Remove from this collection all elements in the given type-specific collection.
`boolean`	`removeAll(Collection<?> c)`
`boolean`	`retainAll(CharCollection c)`	Retains in this collection only elements from the given type-specific collection.
`boolean`	`retainAll(Collection<?> c)`
`int`	`size()`
`Object[]`	`toArray()`
`char[]`	`toArray(char[] a)`	Returns an array containing all of the elements in this collection; the runtime type of the returned array is that of the specified array.
`<T> T[]`	`toArray(T[] a)`
`char[]`	`toCharArray()`	Returns a primitive type array containing the items of this collection.
`char[]`	`toCharArray(char[] a)`	Deprecated.
`String`	`toString()`

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.chars.CharCollection
removeIf, removeIf

Methods inherited from interface it.unimi.dsi.fastutil.chars.CharIterable
forEach, forEach

Methods inherited from interface java.util.Collection
parallelStream, spliterator, stream, toArray

- Method Detail
  - add
```
public boolean add(char k)
```
    Description copied from interface: CharCollection
    
    Ensures that this collection contains the specified element (optional operation).
    
    Specified by:
    
    add in interface CharCollection
    
    See Also:
    
    Collection.add(Object)
  - rem
```
public boolean rem(char k)
```
    Description copied from interface: CharCollection
    
    Removes a single instance of the specified element from this collection, if it is present (optional operation).
    Note that this method should be called 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().
    
    Specified by:
    
    rem in interface CharCollection
    
    See Also:
    
    Collection.remove(Object)
  - size
```
public int size()
```
    Specified by:
    
    size in interface Collection<Character>
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Collection<Character>
  - contains
```
public boolean contains(char o)
```
    Description copied from interface: CharCollection
    
    Returns true if this collection contains the specified element.
    
    Specified by:
    
    contains in interface CharCollection
    
    See Also:
    
    Collection.contains(Object)
  - iterator
```
public CharIterator iterator()
```
    Description copied from interface: CharCollection
    
    Returns a type-specific iterator on the elements of this collection.
    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.
    
    Specified by:
    
    iterator in interface CharCollection
    
    Specified by:
    
    iterator in interface CharIterable
    
    Specified by:
    
    iterator in interface Collection<Character>
    
    Specified by:
    
    iterator in interface Iterable<Character>
    
    Returns:
    
    a type-specific iterator on the elements of this collection.
    
    See Also:
    
    Iterable.iterator()
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface Collection<Character>
  - toArray
```
public <T> T[] toArray(T[] a)
```
    Specified by:
    
    toArray in interface Collection<Character>
  - toArray
```
public Object[] toArray()
```
    Specified by:
    
    toArray in interface Collection<Character>
  - containsAll
```
public boolean containsAll(Collection<?> c)
```
    Specified by:
    
    containsAll in interface Collection<Character>
  - addAll
```
public boolean addAll(Collection<? extends Character> c)
```
    Specified by:
    
    addAll in interface Collection<Character>
  - removeAll
```
public boolean removeAll(Collection<?> c)
```
    Specified by:
    
    removeAll in interface Collection<Character>
  - retainAll
```
public boolean retainAll(Collection<?> c)
```
    Specified by:
    
    retainAll in interface Collection<Character>
  - add
```
@Deprecated
public boolean add(Character k)
```
    Deprecated.
    
    Description copied from interface: CharCollection
    
    Specified by:
    
    add in interface CharCollection
    
    Specified by:
    
    add in interface Collection<Character>
  - contains
```
@Deprecated
public boolean contains(Object k)
```
    Deprecated.
    
    Description copied from interface: CharCollection
    
    Specified by:
    
    contains in interface CharCollection
    
    Specified by:
    
    contains in interface Collection<Character>
  - remove
```
@Deprecated
public boolean remove(Object k)
```
    Deprecated.
    
    Description copied from interface: CharCollection
    
    Specified by:
    
    remove in interface CharCollection
    
    Specified by:
    
    remove in interface Collection<Character>
  - toCharArray
```
public char[] toCharArray()
```
    Description copied from interface: CharCollection
    
    Returns a primitive type array containing the items of this collection.
    
    Specified by:
    
    toCharArray in interface CharCollection
    
    Returns:
    
    a primitive type array containing the items of this collection.
    
    See Also:
    
    Collection.toArray()
  - toCharArray
```
@Deprecated
public char[] toCharArray(char[] a)
```
    Deprecated.
    
    Description copied from interface: CharCollection
    
    Returns a primitive type array containing the items of this collection.
    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.
    
    Specified by:
    
    toCharArray in interface CharCollection
    
    Parameters:
    
    a - if this array is big enough, it will be used to store this collection.
    
    Returns:
    
    a primitive type array containing the items of this collection.
    
    See Also:
    
    Collection.toArray(Object[])
  - toArray
```
public char[] toArray(char[] a)
```
    Description copied from interface: CharCollection
    
    Returns an array containing all of the elements in this collection; the runtime type of the returned array is that of the specified array.
    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.
    
    Specified by:
    
    toArray in interface CharCollection
    
    Parameters:
    
    a - if this array is big enough, it will be used to store this collection.
    
    Returns:
    
    a primitive type array containing the items of this collection.
    
    See Also:
    
    Collection.toArray(Object[])
  - containsAll
```
public boolean containsAll(CharCollection c)
```
    Description copied from interface: CharCollection
    
    Checks whether this collection contains all elements from the given type-specific collection.
    
    Specified by:
    
    containsAll in interface CharCollection
    
    Parameters:
    
    c - a type-specific collection.
    
    Returns:
    
    true if this collection contains all elements of the argument.
    
    See Also:
    
    Collection.containsAll(Collection)
  - addAll
```
public boolean addAll(CharCollection c)
```
    Description copied from interface: CharCollection
    
    Adds all elements of the given type-specific collection to this collection.
    
    Specified by:
    
    addAll in interface CharCollection
    
    Parameters:
    
    c - a type-specific collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
    
    See Also:
    
    Collection.addAll(Collection)
  - removeAll
```
public boolean removeAll(CharCollection c)
```
    Description copied from interface: CharCollection
    
    Remove from this collection all elements in the given type-specific collection.
    
    Specified by:
    
    removeAll in interface CharCollection
    
    Parameters:
    
    c - a type-specific collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
    
    See Also:
    
    Collection.removeAll(Collection)
  - retainAll
```
public boolean retainAll(CharCollection c)
```
    Description copied from interface: CharCollection
    
    Retains in this collection only elements from the given type-specific collection.
    
    Specified by:
    
    retainAll in interface CharCollection
    
    Parameters:
    
    c - a type-specific collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
    
    See Also:
    
    Collection.retainAll(Collection)
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface Collection<Character>
    
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object o)
```
    Specified by:
    
    equals in interface Collection<Character>
    
    Overrides:
    
    equals in class Object

Class CharCollections.UnmodifiableCollection

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface it.unimi.dsi.fastutil.chars.CharCollection

Methods inherited from interface it.unimi.dsi.fastutil.chars.CharIterable

Methods inherited from interface java.util.Collection

Method Detail

add

rem

size

isEmpty

contains

iterator

clear

toArray

toArray

containsAll

addAll

removeAll

retainAll

add

contains

remove

toCharArray

toCharArray

toArray

containsAll

addAll

removeAll

retainAll

toString

hashCode

equals