Package com.randomnoun.common

Class HashMapIgnoreCase<K,V>

java.lang.Object

java.util.AbstractMap<String,V>

java.util.HashMap<String,V>

com.randomnoun.common.HashMapIgnoreCase<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<String,V>

public class HashMapIgnoreCase<K,V>
extends HashMap<String,V>

Case-preserving hashmap that allows case-insensitive lookups.

Author:

knoxg

See Also:

• Serialized Form

Nested Class Summary

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

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

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor	Description
HashMapIgnoreCase()

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(Object key)	Returns true if this map contains a mapping for the specified key.
V	get(Object key)	Retrieve a value from the cache.
V	put(String key, V value)	Associates the specified value with the specified key in this map.
V	remove(Object key)	Removes the mapping for this key from this map if present.

Methods inherited from class java.util.HashMap

clear, clone, compute, computeIfAbsent, computeIfPresent, containsValue, entrySet, forEach, getOrDefault, isEmpty, keySet, merge, newHashMap, putAll, putIfAbsent, remove, replace, replace, replaceAll, 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 Details

HashMapIgnoreCase

public HashMapIgnoreCase()

Method Details

get

public V get(Object key)

Retrieve a value from the cache.

Specified by:

get in interface Map<K,V>

Overrides:

get in class HashMap<String,V>

Parameters:

key - key whose associated value is to be returned

Returns:

the value to which this map maps the specified key, or null if the map contains no mapping for this key.

put

public V put(String key,
 V value)

Associates the specified value with the specified key in this map. If the map previously contained a mapping for this key, the old value is replaced.

Specified by:

put in interface Map<K,V>

Overrides:

put in class HashMap<String,V>

Parameters:

key - key with which the specified value is to be associated.

value - value to be associated with the specified key.

Returns:

previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the HashMap previously associated null with the specified key.

Throws:

IllegalArgumentException - if the key parameter is not a String

containsKey

public boolean containsKey(Object key)

Returns true if this map contains a mapping for the specified key. More formally, returns true if and only if this map contains at a mapping for a key k such that (key==null ? k==null : key.equals(k)). (There can be at most one such mapping.)

Specified by:

containsKey in interface Map<K,V>

Overrides:

containsKey in class HashMap<String,V>

Parameters:

key - key whose presence in this map is to be tested.

Returns:

true if this map contains a mapping for the specified key.

remove

public V remove(Object key)

Removes the mapping for this key from this map if present.

Specified by:

remove in interface Map<K,V>

Overrides:

remove in class HashMap<String,V>

Parameters:

key - key whose mapping is to be removed from the map.

Returns:

previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the map previously associated null with the specified key.