Class UnmodifiableNavigableSet<E>

java.lang.Object

org.apache.commons.collections4.collection.AbstractCollectionDecorator<E>

org.apache.commons.collections4.set.AbstractSetDecorator<E>

org.apache.commons.collections4.set.AbstractSortedSetDecorator<E>

org.apache.commons.collections4.set.AbstractNavigableSetDecorator<E>

org.apache.commons.collections4.set.UnmodifiableNavigableSet<E>

Type Parameters:

E - The type of the elements in this set

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>, NavigableSet<E>, Set<E>, SortedSet<E>, Unmodifiable

public final class UnmodifiableNavigableSet<E>
extends AbstractNavigableSetDecorator<E>
implements Unmodifiable

Decorates another NavigableSet to ensure it can't be altered.

Attempts to modify it will result in an UnsupportedOperationException.

Since:

4.1

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
boolean	add(E object)	Always throws UnsupportedOperationException.
boolean	addAll(Collection<? extends E> coll)	Always throws UnsupportedOperationException.
void	clear()	Always throws UnsupportedOperationException.
Iterator<E>	descendingIterator()
NavigableSet<E>	descendingSet()
SortedSet<E>	headSet(E toElement)
NavigableSet<E>	headSet(E toElement, boolean inclusive)
Iterator<E>	iterator()
E	pollFirst()	Always throws UnsupportedOperationException.
E	pollLast()	Always throws UnsupportedOperationException.
boolean	remove(Object object)	Always throws UnsupportedOperationException.
boolean	removeAll(Collection<?> coll)	Always throws UnsupportedOperationException.
boolean	removeIf(Predicate<? super E> filter)	Always throws UnsupportedOperationException.
boolean	retainAll(Collection<?> coll)	Always throws UnsupportedOperationException.
NavigableSet<E>	subSet(E fromElement, boolean fromInclusive, E toElement, boolean toInclusive)
SortedSet<E>	subSet(E fromElement, E toElement)
SortedSet<E>	tailSet(E fromElement)
NavigableSet<E>	tailSet(E fromElement, boolean inclusive)
static <E> NavigableSet<E>	unmodifiableNavigableSet(NavigableSet<E> set)	Factory method to create an unmodifiable set.

Methods inherited from class AbstractNavigableSetDecorator

ceiling, decorated, floor, higher, lower

Methods inherited from class AbstractSortedSetDecorator

comparator, first, last

Methods inherited from class AbstractSetDecorator

equals, hashCode

Methods inherited from class AbstractCollectionDecorator

contains, containsAll, isEmpty, setCollection, size, toArray, toArray, toString

Methods inherited from class Object

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

Methods inherited from interface Collection

parallelStream, stream

Methods inherited from interface Iterable

forEach

Methods inherited from interface Set

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

Methods inherited from interface SortedSet

comparator, first, last, spliterator

Method Details

unmodifiableNavigableSet

public static <E> NavigableSet<E> unmodifiableNavigableSet(NavigableSet<E> set)

Factory method to create an unmodifiable set.

Type Parameters:

E - The element type

Parameters:

set - The set to decorate, must not be null

Returns:

A new unmodifiable NavigableSet

Throws:

NullPointerException - if set is null

add

public boolean add(E object)

Always throws UnsupportedOperationException.

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

Overrides:

add in class AbstractCollectionDecorator<E>

Parameters:

object - Ignored.

Throws:

UnsupportedOperationException - Always thrown.

addAll

public boolean addAll(Collection<? extends E> coll)

Always throws UnsupportedOperationException.

Specified by:

addAll in interface Collection<E>

Specified by:

addAll in interface Set<E>

Overrides:

addAll in class AbstractCollectionDecorator<E>

Parameters:

coll - Ignored.

Throws:

UnsupportedOperationException - Always thrown.

clear

public void clear()

Always throws UnsupportedOperationException.

Specified by:

clear in interface Collection<E>

Specified by:

clear in interface Set<E>

Overrides:

clear in class AbstractCollectionDecorator<E>

Throws:

UnsupportedOperationException - Always thrown.

descendingIterator

public Iterator<E> descendingIterator()

Specified by:

descendingIterator in interface NavigableSet<E>

Overrides:

descendingIterator in class AbstractNavigableSetDecorator<E>

descendingSet

public NavigableSet<E> descendingSet()

Specified by:

descendingSet in interface NavigableSet<E>

Overrides:

descendingSet in class AbstractNavigableSetDecorator<E>

headSet

public SortedSet<E> headSet(E toElement)

Specified by:

headSet in interface NavigableSet<E>

Specified by:

headSet in interface SortedSet<E>

Overrides:

headSet in class AbstractSortedSetDecorator<E>

headSet

public NavigableSet<E> headSet(E toElement,
 boolean inclusive)

Specified by:

headSet in interface NavigableSet<E>

Overrides:

headSet in class AbstractNavigableSetDecorator<E>

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface NavigableSet<E>

Specified by:

iterator in interface Set<E>

Overrides:

iterator in class AbstractCollectionDecorator<E>

pollFirst

public E pollFirst()

Always throws UnsupportedOperationException.

Specified by:

pollFirst in interface NavigableSet<E>

Overrides:

pollFirst in class AbstractNavigableSetDecorator<E>

Throws:

UnsupportedOperationException - Always thrown.

Since:

4.5.0-M1

pollLast

public E pollLast()

Always throws UnsupportedOperationException.

Specified by:

pollLast in interface NavigableSet<E>

Overrides:

pollLast in class AbstractNavigableSetDecorator<E>

Throws:

UnsupportedOperationException - Always thrown.

Since:

4.5.0-M1

remove

public boolean remove(Object object)

Always throws UnsupportedOperationException.

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface Set<E>

Overrides:

remove in class AbstractCollectionDecorator<E>

Parameters:

object - Ignored.

Throws:

UnsupportedOperationException - Always thrown.

removeAll

public boolean removeAll(Collection<?> coll)

Always throws UnsupportedOperationException.

Specified by:

removeAll in interface Collection<E>

Specified by:

removeAll in interface Set<E>

Overrides:

removeAll in class AbstractCollectionDecorator<E>

Parameters:

coll - Ignored.

Throws:

UnsupportedOperationException - Always thrown.

removeIf

public boolean removeIf(Predicate<? super E> filter)

Always throws UnsupportedOperationException.

Specified by:

removeIf in interface Collection<E>

Overrides:

removeIf in class AbstractCollectionDecorator<E>

Parameters:

filter - Ignored.

Throws:

UnsupportedOperationException - Always thrown.

Since:

4.4

retainAll

public boolean retainAll(Collection<?> coll)

Always throws UnsupportedOperationException.

Specified by:

retainAll in interface Collection<E>

Specified by:

retainAll in interface Set<E>

Overrides:

retainAll in class AbstractCollectionDecorator<E>

Parameters:

coll - Ignored.

Throws:

UnsupportedOperationException - Always thrown.

subSet

public NavigableSet<E> subSet(E fromElement,
 boolean fromInclusive,
 E toElement,
 boolean toInclusive)

Specified by:

subSet in interface NavigableSet<E>

Overrides:

subSet in class AbstractNavigableSetDecorator<E>

subSet

public SortedSet<E> subSet(E fromElement,
 E toElement)

Specified by:

subSet in interface NavigableSet<E>

Specified by:

subSet in interface SortedSet<E>

Overrides:

subSet in class AbstractSortedSetDecorator<E>

tailSet

public SortedSet<E> tailSet(E fromElement)

Specified by:

tailSet in interface NavigableSet<E>

Specified by:

tailSet in interface SortedSet<E>

Overrides:

tailSet in class AbstractSortedSetDecorator<E>

tailSet

public NavigableSet<E> tailSet(E fromElement,
 boolean inclusive)

Specified by:

tailSet in interface NavigableSet<E>

Overrides:

tailSet in class AbstractNavigableSetDecorator<E>