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:

Map.Entry<K,V>, 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 1477753 2013-04-30 18:24:24Z tn $

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<K,V> pair)

Constructs a new entry from the specified KeyValue.

Parameters:

pair - the pair to copy, must not be null

Throws:

NullPointerException - if the entry is null

UnmodifiableMapEntry

public UnmodifiableMapEntry(Map.Entry<K,V> entry)

Constructs a new entry from the specified Map.Entry.

Parameters:

entry - the entry to copy, must not be null

Throws:

NullPointerException - if the entry is null

setValue

public V setValue(V value)

Throws UnsupportedOperationException.

Specified by:

setValue in interface Map.Entry<K,V>

Overrides:

setValue in class AbstractMapEntry<K,V>

Parameters:

value - the new value

Returns:

the previous value

Throws:

UnsupportedOperationException - always