View of a Map that disallow modifying the map.
A wrapper around a Map
that forwards all members to the map provided in
the constructor, except for operations that modify the map.
Modifying operations throw instead.
Properties
Constructors
- UnmodifiableMapView(Map<K,V> map)
-
const
Operators
-
operator [](
Object key) → V -
inheritedReturns the value for the given
key
or null ifkey
is not in the map. -
operator []=(
K key, V value) → void -
inheritedAssociates the
key
with the givenvalue
.
Methods
-
addAll(
Map<K,V> other) → void -
inheritedAdds all key-value pairs of
other
to this map. -
clear(
) → void -
inheritedRemoves all pairs from the map.
-
containsKey(
Object key) → bool -
inheritedReturns true if this map contains the given
key
. -
containsValue(
Object value) → bool -
inheritedReturns true if this map contains the given
value
. -
forEach(
void action(K key, V value)) → void -
inheritedApplies
f
to each key-value pair of the map. -
putIfAbsent(
K key, V ifAbsent()) → V -
inheritedLook up the value of
key
, or add a new value if it isn't there. -
remove(
Object key) → V -
inheritedRemoves
key
and its associated value, if present, from the map. -
toString(
) → String -
inheritedReturns a string representation of this object.