org.apache.commons.collections.keyvalue
Class DefaultMapEntry<K,V>

java.lang.Object
  org.apache.commons.collections.keyvalue.AbstractKeyValue<K,V>
      org.apache.commons.collections.keyvalue.AbstractMapEntry<K,V>
          org.apache.commons.collections.keyvalue.DefaultMapEntry<K,V>

All Implemented Interfaces:

Map.Entry<K,V>, KeyValue<K,V>

public final class DefaultMapEntry<K,V>
extends AbstractMapEntry<K,V>

A restricted implementation of Map.Entry that prevents the MapEntry contract from being broken.

Since:

Commons Collections 3.0

Version:

$Revision: 1.1.1.1 $ $Date: 2005/05/23 04:35:08 $

Author:

James Strachan, Michael A. Smith, Neil O'Toole, Matt Hall, John Watkinson, Stephen Colebourne

Field Summary

Fields inherited from class org.apache.commons.collections.keyvalue.AbstractKeyValue

key, value

Constructor Summary

DefaultMapEntry(KeyValue<K,V> pair)
Constructs a new entry from the specified KeyValue.

DefaultMapEntry(K key, V value)
Constructs a new entry with the specified key and given value.

DefaultMapEntry(Map.Entry<K,V> entry)
Constructs a new entry from the specified MapEntry.

Method Summary

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

equals, hashCode, setValue

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

getKey, getValue, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map.Entry

getKey, getValue

Constructor Detail

DefaultMapEntry

public DefaultMapEntry(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

DefaultMapEntry

public DefaultMapEntry(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

DefaultMapEntry

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

Constructs a new entry from the specified MapEntry.

Parameters:

entry - the entry to copy, must not be null

Throws:

NullPointerException - if the entry is null