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:
- 
Method SummaryModifier 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.AbstractSetDecoratordecorated, equals, hashCodeMethods inherited from class org.apache.commons.collections4.collection.AbstractCollectionDecoratorcontains, containsAll, isEmpty, setCollection, size, toArray, toArray, toStringMethods inherited from class java.lang.Objectclone, finalize, getClass, notify, notifyAll, wait, wait, waitMethods inherited from interface java.util.CollectionparallelStream, streamMethods inherited from interface java.util.Setcontains, containsAll, isEmpty, size, spliterator, toArray, toArray
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Method Details- 
unmodifiableSetFactory 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
 
- 
add
- 
addAll- Specified by:
- addAllin interface- Collection<E>
- Specified by:
- addAllin interface- Set<E>
- Overrides:
- addAllin class- AbstractCollectionDecorator<E>
 
- 
clear- Specified by:
- clearin interface- Collection<E>
- Specified by:
- clearin interface- Set<E>
- Overrides:
- clearin class- AbstractCollectionDecorator<E>
 
- 
iterator
- 
remove
- 
removeAll- Specified by:
- removeAllin interface- Collection<E>
- Specified by:
- removeAllin interface- Set<E>
- Overrides:
- removeAllin class- AbstractCollectionDecorator<E>
 
- 
removeIf- Specified by:
- removeIfin interface- Collection<E>
- Overrides:
- removeIfin class- AbstractCollectionDecorator<E>
- Since:
- 4.4
 
- 
retainAll- Specified by:
- retainAllin interface- Collection<E>
- Specified by:
- retainAllin interface- Set<E>
- Overrides:
- retainAllin class- AbstractCollectionDecorator<E>
 
 
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