Package org.apache.tomcat.util.collections

Class CaseInsensitiveKeyMap<V>

java.lang.Object

java.util.AbstractMap<String,V>

org.apache.tomcat.util.collections.CaseInsensitiveKeyMap<V>

Type Parameters:

V - Type of values placed in this Map.

All Implemented Interfaces:

Map<String,V>

public class CaseInsensitiveKeyMap<V>
extends AbstractMap<String,V>

A Map implementation that uses case-insensitive (using Locale.ENGLISH) strings as keys.

Keys must be instances of String. Note that this means that null keys are not permitted.

This implementation is not thread-safe.

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
CaseInsensitiveKeyMap()

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(Object key)
Set<Map.Entry<String,V>>	entrySet()
V	get(Object key)
V	put(String key, V value)
void	putAll(Map<? extends String,? extends V> m)
V	remove(Object key)

Methods inherited from class java.util.AbstractMap

clear, clone, containsValue, equals, hashCode, isEmpty, keySet, size, toString, values

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

CaseInsensitiveKeyMap

public CaseInsensitiveKeyMap()

Method Details

get

public V get(Object key)

Specified by:

get in interface Map<String,V>

Overrides:

get in class AbstractMap<String,V>

put

public V put(String key,
 V value)

Specified by:

put in interface Map<String,V>

Overrides:

put in class AbstractMap<String,V>

putAll

public void putAll(Map<? extends String,? extends V> m)

Use this method with caution. If the input Map contains duplicate keys when the keys are compared in a case insensitive manner then some values will be lost when inserting via this method.

Specified by:

putAll in interface Map<String,V>

Overrides:

putAll in class AbstractMap<String,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,V>

Overrides:

containsKey in class AbstractMap<String,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<String,V>

Overrides:

remove in class AbstractMap<String,V>

entrySet

public Set<Map.Entry<String,V>> entrySet()

Specified by:

entrySet in interface Map<String,V>

Specified by:

entrySet in class AbstractMap<String,V>