K - type of KeysV - type of Valuespublic interface StateHolder<K,V>
Map like structure that can hold key value mappings.| Modifier and Type | Method and Description |
|---|---|
java.util.Set<java.util.Map.Entry<K,V>> |
entrySet()
Retrieves all the entries in the
StateHolder as a Set of Map.Entry instances. |
V |
get(K key)
Retrieves the value mapped to the given
key |
V |
putIfAbsent(K key,
V value)
If the specified key is not already associated with a value (or is mapped
to
null) associates it with the given value and returns
null, else returns the current value. |
V putIfAbsent(K key, V value)
null) associates it with the given value and returns
null, else returns the current value.key - a keyvalue - a valuenull if there was no mapping for the key.V get(K key)
keykey - a key