com.steelypip.powerups.common

Class EmptyMap<T,U>

java.lang.Object

java.util.AbstractMap<T,U>

com.steelypip.powerups.common.EmptyMap<T,U>

Type Parameters:

T - the type of the domain

U - the type of the codomain

All Implemented Interfaces:

java.util.Map<T,U>

public class EmptyMap<T,U>
extends java.util.AbstractMap<T,U>

Implements the special case of an empty, immutable map from any type T to any type U.

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
EmptyMap()

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
java.util.Set<java.util.Map.Entry<T,U>>	entrySet()
U	get(java.lang.Object key)
boolean	isEmpty()
java.util.Set<T>	keySet()
U	put(T key, U value)
void	putAll(java.util.Map<? extends T,? extends U> m)
U	remove(java.lang.Object key)
int	size()
java.util.Collection<U>	values()

Methods inherited from class java.util.AbstractMap

clone, equals, hashCode, toString

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 Detail

EmptyMap

public EmptyMap()

Method Detail

entrySet

public java.util.Set<java.util.Map.Entry<T,U>> entrySet()

Specified by:

entrySet in interface java.util.Map<T,U>

Specified by:

entrySet in class java.util.AbstractMap<T,U>

size

public int size()

Specified by:

size in interface java.util.Map<T,U>

Overrides:

size in class java.util.AbstractMap<T,U>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<T,U>

Overrides:

isEmpty in class java.util.AbstractMap<T,U>

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map<T,U>

Overrides:

containsValue in class java.util.AbstractMap<T,U>

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map<T,U>

Overrides:

containsKey in class java.util.AbstractMap<T,U>

get

public U get(java.lang.Object key)

Specified by:

get in interface java.util.Map<T,U>

Overrides:

get in class java.util.AbstractMap<T,U>

put

public U put(T key,
             U value)

Specified by:

put in interface java.util.Map<T,U>

Overrides:

put in class java.util.AbstractMap<T,U>

remove

public U remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<T,U>

Overrides:

remove in class java.util.AbstractMap<T,U>

putAll

public void putAll(java.util.Map<? extends T,? extends U> m)

Specified by:

putAll in interface java.util.Map<T,U>

Overrides:

putAll in class java.util.AbstractMap<T,U>

clear

public void clear()

Specified by:

clear in interface java.util.Map<T,U>

Overrides:

clear in class java.util.AbstractMap<T,U>

keySet

public java.util.Set<T> keySet()

Specified by:

keySet in interface java.util.Map<T,U>

Overrides:

keySet in class java.util.AbstractMap<T,U>

values

public java.util.Collection<U> values()

Specified by:

values in interface java.util.Map<T,U>

Overrides:

values in class java.util.AbstractMap<T,U>