com.ibm.tivoli.maximo.dbmanage

Class NoNullValueHashMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

com.ibm.tivoli.maximo.dbmanage.NoNullValueHashMap<K,V>

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<K,V>

public class NoNullValueHashMap<K,V>
extends java.util.HashMap<K,V>
implements java.util.Map<K,V>

This HashMap will not store keys with null values. Unlike Hashtable, it will not throw an exception if put is called with a null value. Instead it will remove the key from the map.

Author:

John_Neville

See Also:

Allows null values, Synchronized and throws exception if put with null for value., Serialized Form

Nested Class Summary

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

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

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
NoNullValueHashMap() Constructor
NoNullValueHashMap(int initialCapacity) Constructor
NoNullValueHashMap(int initialCapacity, float loadFactor) Constructor
NoNullValueHashMap(java.util.Map<K,V> m) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
V	put(K key, V value)

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

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

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

Constructor Detail

NoNullValueHashMap

public NoNullValueHashMap()

Constructor

NoNullValueHashMap

public NoNullValueHashMap(int initialCapacity)

Constructor

Parameters:

initialCapacity -

NoNullValueHashMap

public NoNullValueHashMap(int initialCapacity,
                  float loadFactor)

Constructor

Parameters:

initialCapacity -

loadFactor -

NoNullValueHashMap

public NoNullValueHashMap(java.util.Map<K,V> m)

Constructor

Parameters:

m -

Method Detail

put

public V put(K key,
    V value)

Specified by:

put in interface java.util.Map<K,V>

Overrides:

put in class java.util.HashMap<K,V>