public static class Object2ReferenceFunctions.SynchronizedFunction<K,V> extends AbstractObject2ReferenceFunction<K,V> implements java.io.Serializable
Modifier and Type | Method and Description |
---|---|
void |
clear()
Removes all associations from this function (optional operation).
|
boolean |
containsKey(java.lang.Object k)
Returns true if this function contains a mapping for the specified key.
|
V |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(V defRetValue)
Sets the default return value.
|
V |
get(java.lang.Object k)
Returns the value associated by this function to the specified key.
|
V |
put(K k,
V v)
Associates the specified value with the specified key in this function (optional operation).
|
V |
remove(java.lang.Object k)
Removes this key and the associated value from this function if it is present (optional operation).
|
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
|
java.lang.String |
toString() |
public int size()
Function
Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.
public boolean containsKey(java.lang.Object k)
Function
Note that for some kind of functions (e.g., hashes) this method will always return true.
containsKey
in interface Function<K,V>
k
- the key.key
.Map.containsKey(Object)
public V defaultReturnValue()
Object2ReferenceFunction
defaultReturnValue
in interface Object2ReferenceFunction<K,V>
defaultReturnValue
in class AbstractObject2ReferenceFunction<K,V>
public void defaultReturnValue(V defRetValue)
Object2ReferenceFunction
get()
, put()
and remove()
to
denote that the map does not contain the specified key. It must be
0/false
/null
by default.defaultReturnValue
in interface Object2ReferenceFunction<K,V>
defaultReturnValue
in class AbstractObject2ReferenceFunction<K,V>
defRetValue
- the new default return value.Object2ReferenceFunction.defaultReturnValue()
public V put(K k, V v)
Function
public void clear()
Function
public java.lang.String toString()
toString
in class java.lang.Object
public V remove(java.lang.Object k)
Function