Package org.apache.commons.collections4.keyvalue

Class UnmodifiableMapEntry<K,V>

java.lang.Object

org.apache.commons.collections4.keyvalue.AbstractKeyValue<K,V>

org.apache.commons.collections4.keyvalue.AbstractMapEntry<K,V>

org.apache.commons.collections4.keyvalue.UnmodifiableMapEntry<K,V>

All Implemented Interfaces:

KeyValue<K,V>, Unmodifiable

public final class UnmodifiableMapEntry<K,V>
extends AbstractMapEntry<K,V>
implements Unmodifiable

A Map.Entry that throws UnsupportedOperationException when setValue is called.

Since:

3.0

Version:

$Id: UnmodifiableMapEntry.java 1533984 2013-10-20 21:12:51Z tn $

Constructor Summary

Constructors

Constructor	Description
UnmodifiableMapEntry(java.util.Map.Entry<? extends K,? extends V> entry)	Constructs a new entry from the specified Map.Entry.
UnmodifiableMapEntry(K key, V value)	Constructs a new entry with the specified key and given value.
UnmodifiableMapEntry(KeyValue<? extends K,? extends V> pair)	Constructs a new entry from the specified KeyValue.

Method Summary

Modifier and Type	Method	Description
V	setValue(V value)	Throws UnsupportedOperationException.

Methods inherited from class org.apache.commons.collections4.keyvalue.AbstractKeyValue

getKey, getValue, setKey, toString

Methods inherited from class org.apache.commons.collections4.keyvalue.AbstractMapEntry

equals, hashCode

Methods inherited from interface java.util.Map.Entry

comparingByKey, comparingByKey, comparingByValue, comparingByValue, getKey, getValue

Methods inherited from class java.lang.Object

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

Constructor Detail

UnmodifiableMapEntry

public UnmodifiableMapEntry(K key,
                            V value)

Constructs a new entry with the specified key and given value.

Parameters:

key - the key for the entry, may be null

value - the value for the entry, may be null

UnmodifiableMapEntry

public UnmodifiableMapEntry(KeyValue<? extends K,? extends V> pair)

Constructs a new entry from the specified KeyValue.

Parameters:

pair - the pair to copy, must not be null

Throws:

java.lang.NullPointerException - if the entry is null

UnmodifiableMapEntry

public UnmodifiableMapEntry(java.util.Map.Entry<? extends K,? extends V> entry)

Constructs a new entry from the specified Map.Entry.

Parameters:

entry - the entry to copy, must not be null

Throws:

java.lang.NullPointerException - if the entry is null

Method Detail

setValue

public V setValue(V value)

Throws UnsupportedOperationException.

Overrides:

setValue in class AbstractMapEntry<K,V>

Parameters:

value - the new value

Returns:

the previous value

Throws:

java.lang.UnsupportedOperationException - always