Class UnmodifiableSet<E>
java.lang.Object
org.apache.commons.collections4.collection.AbstractCollectionDecorator<E>
org.apache.commons.collections4.set.AbstractSetDecorator<E>
org.apache.commons.collections4.set.AbstractSerializableSetDecorator<E>
org.apache.commons.collections4.set.UnmodifiableSet<E>
- Type Parameters:
E- the type of the elements in this set
- All Implemented Interfaces:
Serializable,Iterable<E>,Collection<E>,Set<E>,Unmodifiable
public final class UnmodifiableSet<E>
extends AbstractSerializableSetDecorator<E>
implements Unmodifiable
Decorates another
Set 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:
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Method Summary
Modifier and TypeMethodDescriptionbooleanbooleanaddAll(Collection<? extends E> coll) voidclear()iterator()booleanbooleanremoveAll(Collection<?> coll) booleanbooleanretainAll(Collection<?> coll) static <E> Set<E> unmodifiableSet(Set<? extends E> set) Factory method to create an unmodifiable set.Methods inherited from class org.apache.commons.collections4.set.AbstractSetDecorator
decorated, equals, hashCodeMethods inherited from class org.apache.commons.collections4.collection.AbstractCollectionDecorator
contains, containsAll, isEmpty, setCollection, size, toArray, toArray, toStringMethods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, waitMethods inherited from interface java.util.Collection
parallelStream, streamMethods inherited from interface java.util.Set
contains, containsAll, isEmpty, size, spliterator, toArray, toArray
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Method Details
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unmodifiableSet
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 set
- Throws:
NullPointerException- if set is null- Since:
- 4.0
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add
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addAll
- Specified by:
addAllin interfaceCollection<E>- Specified by:
addAllin interfaceSet<E>- Overrides:
addAllin classAbstractCollectionDecorator<E>
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clear
- Specified by:
clearin interfaceCollection<E>- Specified by:
clearin interfaceSet<E>- Overrides:
clearin classAbstractCollectionDecorator<E>
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iterator
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remove
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removeAll
- Specified by:
removeAllin interfaceCollection<E>- Specified by:
removeAllin interfaceSet<E>- Overrides:
removeAllin classAbstractCollectionDecorator<E>
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removeIf
- Specified by:
removeIfin interfaceCollection<E>- Overrides:
removeIfin classAbstractCollectionDecorator<E>- Since:
- 4.4
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retainAll
- Specified by:
retainAllin interfaceCollection<E>- Specified by:
retainAllin interfaceSet<E>- Overrides:
retainAllin classAbstractCollectionDecorator<E>
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