org.apache.commons.collections
Class MultiHashMap
java.lang.Object
|
+--java.util.AbstractMap
|
+--java.util.HashMap
|
+--org.apache.commons.collections.MultiHashMap
- All Implemented Interfaces:
- java.lang.Cloneable, java.util.Map, MultiMap, java.io.Serializable
- public class MultiHashMap
- extends java.util.HashMap
- implements MultiMap
MultiHashMap
is the default implementation of the
MultiMap
interface.
A MultiMap
is a Map with slightly different semantics.
Instead of returning an Object, it returns a Collection.
So for example, you can put( key, new Integer(1) );
and then a Object get( key ); will return you a Collection
instead of an Integer.
- Since:
- 2.0
- Author:
- Christopher Berry, James Strachan, Steve Downey, Stephen Colebourne
- See Also:
- Serialized Form
Method Summary |
void |
clear()
|
java.lang.Object |
clone()
|
boolean |
containsValue(java.lang.Object value)
|
java.lang.String |
getName()
|
java.lang.Object |
put(java.lang.Object key,
java.lang.Object value)
|
void |
putAll(java.util.Map mapToPut)
|
java.lang.Object |
remove(java.lang.Object key,
java.lang.Object item)
|
java.util.Collection |
values()
|
Methods inherited from class java.util.HashMap |
containsKey, entrySet, get, isEmpty, keySet, remove, size |
Methods inherited from class java.util.AbstractMap |
equals, hashCode, toString |
Methods inherited from class java.lang.Object |
getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Map |
containsKey, entrySet, equals, get, hashCode, isEmpty, keySet, remove, size |
MultiHashMap
public MultiHashMap()
MultiHashMap
public MultiHashMap(int initialCapacity)
MultiHashMap
public MultiHashMap(int initialCapacity,
float loadFactor)
MultiHashMap
public MultiHashMap(java.util.Map mapToCopy)
getName
public java.lang.String getName()
put
public java.lang.Object put(java.lang.Object key,
java.lang.Object value)
- Specified by:
put
in interface java.util.Map
- Overrides:
put
in class java.util.HashMap
containsValue
public boolean containsValue(java.lang.Object value)
- Specified by:
containsValue
in interface java.util.Map
- Overrides:
containsValue
in class java.util.HashMap
remove
public java.lang.Object remove(java.lang.Object key,
java.lang.Object item)
- Specified by:
remove
in interface MultiMap
clear
public void clear()
- Specified by:
clear
in interface java.util.Map
- Overrides:
clear
in class java.util.HashMap
putAll
public void putAll(java.util.Map mapToPut)
- Specified by:
putAll
in interface java.util.Map
- Overrides:
putAll
in class java.util.HashMap
values
public java.util.Collection values()
- Specified by:
values
in interface java.util.Map
- Overrides:
values
in class java.util.HashMap
clone
public java.lang.Object clone()
- Overrides:
clone
in class java.util.HashMap
Copyright © 2001-2004 The Apache Software Foundation. All Rights Reserved.