Package org.apache.commons.collections4.set

Class UnmodifiableSortedSet<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.UnmodifiableSortedSet<E>

Type Parameters:

E - The type of the elements in this set

All Implemented Interfaces:

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

public final class UnmodifiableSortedSet<E>
extends AbstractSortedSetDecorator<E>
implements Unmodifiable

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

This class is Serializable from Commons Collections 3.1.

Attempts to modify it will result in an UnsupportedOperationException.

Since:

3.0

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.
SortedSet<E>	headSet(E toElement)
Iterator<E>	iterator()
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.
SortedSet<E>	subSet(E fromElement, E toElement)
SortedSet<E>	tailSet(E fromElement)
static <E> SortedSet<E>	unmodifiableSortedSet(SortedSet<E> set)	Factory method to create an unmodifiable set.

Methods inherited from class org.apache.commons.collections4.set.AbstractSortedSetDecorator

comparator, decorated, first, last

Methods inherited from class org.apache.commons.collections4.set.AbstractSetDecorator

equals, hashCode

Methods inherited from class org.apache.commons.collections4.collection.AbstractCollectionDecorator

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

parallelStream, stream

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

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

Methods inherited from interface java.util.SortedSet

spliterator

Method Details

unmodifiableSortedSet

public static <E> SortedSet<E> unmodifiableSortedSet(SortedSet<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 SortedSet

Throws:

NullPointerException - if set is null

Since:

4.0

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.

headSet

public SortedSet<E> headSet(E toElement)

Specified by:

headSet in interface SortedSet<E>

Overrides:

headSet in class AbstractSortedSetDecorator<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 Set<E>

Overrides:

iterator in class AbstractCollectionDecorator<E>

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>

Throws:

UnsupportedOperationException - Always thrown.

subSet

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

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 SortedSet<E>

Overrides:

tailSet in class AbstractSortedSetDecorator<E>