org.apache.commons.collections.keyvalue
Class DefaultMapEntry

java.lang.Object
  org.apache.commons.collections.keyvalue.AbstractKeyValue
      org.apache.commons.collections.keyvalue.AbstractMapEntry
          org.apache.commons.collections.keyvalue.DefaultMapEntry

All Implemented Interfaces:

java.util.Map.Entry, KeyValue

public final class DefaultMapEntry
extends AbstractMapEntry

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

Since:

Commons Collections 3.0

Version:

$Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $

Author:

James Strachan, Michael A. Smith, Neil O'Toole, Stephen Colebourne

Field Summary

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

key, value

Constructor Summary

DefaultMapEntry(KeyValue pair)
Constructs a new entry from the specified KeyValue.

DefaultMapEntry(java.util.Map.Entry entry)
Constructs a new entry from the specified Map.Entry.

DefaultMapEntry(java.lang.Object key, java.lang.Object value)
Constructs a new entry with the specified key and given value.

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(java.lang.Object key,
                       java.lang.Object 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 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

DefaultMapEntry

public DefaultMapEntry(java.util.Map.Entry 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