public static class Reference2ReferenceMaps.EmptyMap<K,V> extends Reference2ReferenceFunctions.EmptyFunction<K,V> implements Reference2ReferenceMap<K,V>, Serializable, Cloneable
This class may be useful to implement your own in case you subclass a type-specific map.
Reference2ReferenceMap.Entry<K,V>, Reference2ReferenceMap.FastEntrySet<K,V>
Modifier and Type | Method and Description |
---|---|
Object |
clone() |
boolean |
containsValue(Object v) |
ObjectSet<Map.Entry<K,V>> |
entrySet()
Returns a set view of the mappings contained in this map.
|
boolean |
equals(Object o) |
int |
hashCode() |
boolean |
isEmpty() |
ReferenceSet<K> |
keySet()
Returns a set view of the keys contained in this map.
|
void |
putAll(Map<? extends K,? extends V> m) |
ObjectSet<Reference2ReferenceMap.Entry<K,V>> |
reference2ReferenceEntrySet()
Returns a type-specific set view of the mappings contained in this map.
|
String |
toString() |
ReferenceCollection<V> |
values()
Returns a set view of the values contained in this map.
|
clear, containsKey, defaultReturnValue, defaultReturnValue, get, size
put, remove
defaultReturnValue, defaultReturnValue
public boolean containsValue(Object v)
containsValue
in interface Map<K,V>
public ObjectSet<Reference2ReferenceMap.Entry<K,V>> reference2ReferenceEntrySet()
Reference2ReferenceMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Reference2ReferenceMap.entrySet()
so that it returns an ObjectSet
of objects of type Map.Entry
(the latter makes it possible to
access keys and values with type-specific methods).
reference2ReferenceEntrySet
in interface Reference2ReferenceMap<K,V>
Reference2ReferenceMap.entrySet()
public ReferenceSet<K> keySet()
Reference2ReferenceMap
Note that this specification strengthens the one given in Map.keySet()
.
keySet
in interface Reference2ReferenceMap<K,V>
keySet
in interface Map<K,V>
Map.keySet()
public ReferenceCollection<V> values()
Reference2ReferenceMap
Note that this specification strengthens the one given in Map.values()
.
values
in interface Reference2ReferenceMap<K,V>
values
in interface Map<K,V>
Map.values()
public Object clone()
clone
in class Reference2ReferenceFunctions.EmptyFunction<K,V>
public ObjectSet<Map.Entry<K,V>> entrySet()
Reference2ReferenceMap
Note that this specification strengthens the one given in Map.entrySet()
.
entrySet
in interface Reference2ReferenceMap<K,V>
entrySet
in interface Map<K,V>
Map.entrySet()
public int hashCode()
public boolean equals(Object o)