org.apache.commons.collections4.map

Class UnmodifiableEntrySet<K,V>

java.lang.Object

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

org.apache.commons.collections4.set.AbstractSetDecorator<java.util.Map.Entry<K,V>>

org.apache.commons.collections4.map.UnmodifiableEntrySet<K,V>

Type Parameters:

K - the type of the keys in the map

V - the type of the values in the map

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<java.util.Map.Entry<K,V>>, java.util.Collection<java.util.Map.Entry<K,V>>, java.util.Set<java.util.Map.Entry<K,V>>, Unmodifiable

public final class UnmodifiableEntrySet<K,V>
extends AbstractSetDecorator<java.util.Map.Entry<K,V>>
implements Unmodifiable

Decorates a map entry Set to ensure it can't be altered.

Attempts to modify it will result in an UnsupportedOperationException.

Since:

3.0

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
boolean	add(java.util.Map.Entry<K,V> object)
boolean	addAll(java.util.Collection<? extends java.util.Map.Entry<K,V>> coll)
void	clear()
java.util.Iterator<java.util.Map.Entry<K,V>>	iterator()
boolean	remove(java.lang.Object object)
boolean	removeAll(java.util.Collection<?> coll)
boolean	retainAll(java.util.Collection<?> coll)
java.lang.Object[]	toArray()
<T> T[]	toArray(T[] array)
static <K,V> java.util.Set<java.util.Map.Entry<K,V>>	unmodifiableEntrySet(java.util.Set<java.util.Map.Entry<K,V>> set) Factory method to create an unmodifiable set of Map Entry objects.

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, size, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

contains, containsAll, isEmpty, size, spliterator

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

unmodifiableEntrySet

public static <K,V> java.util.Set<java.util.Map.Entry<K,V>> unmodifiableEntrySet(java.util.Set<java.util.Map.Entry<K,V>> set)

Factory method to create an unmodifiable set of Map Entry objects.

Type Parameters:

K - the key type

V - the value type

Parameters:

set - the set to decorate, must not be null

Returns:

a new unmodifiable entry set

Throws:

java.lang.NullPointerException - if set is null

Since:

4.0

add

public boolean add(java.util.Map.Entry<K,V> object)

Specified by:

add in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

add in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

add in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>

addAll

public boolean addAll(java.util.Collection<? extends java.util.Map.Entry<K,V>> coll)

Specified by:

addAll in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

addAll in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

addAll in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>

clear

public void clear()

Specified by:

clear in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

clear in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

clear in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>

remove

public boolean remove(java.lang.Object object)

Specified by:

remove in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

remove in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

remove in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>

removeAll

public boolean removeAll(java.util.Collection<?> coll)

Specified by:

removeAll in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

removeAll in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

removeAll in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>

retainAll

public boolean retainAll(java.util.Collection<?> coll)

Specified by:

retainAll in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

retainAll in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

retainAll in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>

iterator

public java.util.Iterator<java.util.Map.Entry<K,V>> iterator()

Specified by:

iterator in interface java.lang.Iterable<java.util.Map.Entry<K,V>>

Specified by:

iterator in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

iterator in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

iterator in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

toArray in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

toArray in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>

toArray

public <T> T[] toArray(T[] array)

Specified by:

toArray in interface java.util.Collection<java.util.Map.Entry<K,V>>

Specified by:

toArray in interface java.util.Set<java.util.Map.Entry<K,V>>

Overrides:

toArray in class AbstractCollectionDecorator<java.util.Map.Entry<K,V>>