org.apache.directory.api.util

Class NoDuplicateKeysMap

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap

org.apache.directory.api.util.NoDuplicateKeysMap

All Implemented Interfaces:

Serializable, Cloneable, Map

public class NoDuplicateKeysMap
extends HashMap

A Map implementation derived from HashMap that only overrides a single method put() in order to prevent duplicate keyed entries to be added.

Author:

Apache Directory Project

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Constructor Summary

Constructors

Constructor and Description
NoDuplicateKeysMap()

Method Summary

Methods

Modifier and Type	Method and Description
Object	put(Object key, Object value) Overrides java.util.Map.put(java.lang.Object, java.lang.Object) to prevent duplicate keys.

Methods inherited from class java.util.HashMap

clear, clone, containsKey, containsValue, entrySet, get, isEmpty, keySet, putAll, remove, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

NoDuplicateKeysMap

public NoDuplicateKeysMap()

Method Detail

put

public Object put(Object key,
         Object value)
           throws IllegalArgumentException

Overrides java.util.Map.put(java.lang.Object, java.lang.Object) to prevent duplicate keys.

Specified by:

put in interface Map

Overrides:

put in class HashMap

Throws:

IllegalArgumentException

See Also:

Map.put(java.lang.Object, java.lang.Object)