Package | Description |
---|---|
java.security |
Provides the classes and interfaces for the security framework.
|
java.util |
Contains the collections framework, legacy collection classes, event model,
date and time facilities, internationalization, and miscellaneous utility
classes (a string tokenizer, a random-number generator, and a bit array).
|
java.util.concurrent |
Utility classes commonly useful in concurrent programming.
|
java.util.function |
Functional interfaces provide target types for lambda expressions
and method references.
|
java.util.stream |
Classes to support functional-style operations on streams of elements, such
as map-reduce transformations on collections.
|
Modifier and Type | Method and Description |
---|---|
Object |
Provider.compute(Object key,
BiFunction<? super Object,? super Object,? extends Object> remappingFunction)
Attempts to compute a mapping for the specified key and its
current mapped value (or
null if there is no current
mapping). |
Object |
Provider.computeIfPresent(Object key,
BiFunction<? super Object,? super Object,? extends Object> remappingFunction)
If the value for the specified key is present and non-null, attempts to
compute a new mapping given the key and its current mapped value.
|
Object |
Provider.merge(Object key,
Object value,
BiFunction<? super Object,? super Object,? extends Object> remappingFunction)
If the specified key is not already associated with a value or is
associated with null, associates it with the given value.
|
void |
Provider.replaceAll(BiFunction<? super Object,? super Object,? extends Object> function)
Replaces each entry's value with the result of invoking the given
function on that entry, in the order entries are returned by an entry
set iterator, until all entries have been processed or the function
throws an exception.
|
Modifier and Type | Method and Description |
---|---|
default V |
Map.compute(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
Attempts to compute a mapping for the specified key and its current
mapped value (or
null if there is no current mapping). |
V |
Hashtable.compute(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction) |
V |
HashMap.compute(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction) |
default V |
Map.computeIfPresent(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
If the value for the specified key is present and non-null, attempts to
compute a new mapping given the key and its current mapped value.
|
V |
Hashtable.computeIfPresent(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction) |
V |
HashMap.computeIfPresent(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction) |
default V |
Map.merge(K key,
V value,
BiFunction<? super V,? super V,? extends V> remappingFunction)
If the specified key is not already associated with a value or is
associated with null, associates it with the given non-null value.
|
V |
Hashtable.merge(K key,
V value,
BiFunction<? super V,? super V,? extends V> remappingFunction) |
V |
HashMap.merge(K key,
V value,
BiFunction<? super V,? super V,? extends V> remappingFunction) |
default void |
Map.replaceAll(BiFunction<? super K,? super V,? extends V> function)
Replaces each entry's value with the result of invoking the given
function on that entry until all entries have been processed or the
function throws an exception.
|
void |
LinkedHashMap.replaceAll(BiFunction<? super K,? super V,? extends V> function) |
void |
Hashtable.replaceAll(BiFunction<? super K,? super V,? extends V> function) |
void |
HashMap.replaceAll(BiFunction<? super K,? super V,? extends V> function) |
void |
TreeMap.replaceAll(BiFunction<? super K,? super V,? extends V> function) |
void |
IdentityHashMap.replaceAll(BiFunction<? super K,? super V,? extends V> function) |
void |
WeakHashMap.replaceAll(BiFunction<? super K,? super V,? extends V> function) |
Modifier and Type | Method and Description |
---|---|
V |
ConcurrentHashMap.compute(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
Attempts to compute a mapping for the specified key and its
current mapped value (or
null if there is no current
mapping). |
V |
ConcurrentSkipListMap.compute(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
Attempts to compute a mapping for the specified key and its
current mapped value (or
null if there is no current
mapping). |
default V |
ConcurrentMap.compute(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
Attempts to compute a mapping for the specified key and its current
mapped value (or
null if there is no current mapping). |
V |
ConcurrentHashMap.computeIfPresent(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
If the value for the specified key is present, attempts to
compute a new mapping given the key and its current mapped
value.
|
V |
ConcurrentSkipListMap.computeIfPresent(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
If the value for the specified key is present, attempts to
compute a new mapping given the key and its current mapped
value.
|
default V |
ConcurrentMap.computeIfPresent(K key,
BiFunction<? super K,? super V,? extends V> remappingFunction)
If the value for the specified key is present and non-null, attempts to
compute a new mapping given the key and its current mapped value.
|
<U> void |
ConcurrentHashMap.forEach(long parallelismThreshold,
BiFunction<? super K,? super V,? extends U> transformer,
Consumer<? super U> action)
Performs the given action for each non-null transformation
of each (key, value).
|
<U> CompletableFuture<U> |
CompletableFuture.handle(BiFunction<? super T,Throwable,? extends U> fn) |
<U> CompletionStage<U> |
CompletionStage.handle(BiFunction<? super T,Throwable,? extends U> fn)
Returns a new CompletionStage that, when this stage completes
either normally or exceptionally, is executed with this stage's
result and exception as arguments to the supplied function.
|
<U> CompletableFuture<U> |
CompletableFuture.handleAsync(BiFunction<? super T,Throwable,? extends U> fn) |
<U> CompletionStage<U> |
CompletionStage.handleAsync(BiFunction<? super T,Throwable,? extends U> fn)
Returns a new CompletionStage that, when this stage completes
either normally or exceptionally, is executed using this stage's
default asynchronous execution facility, with this stage's
result and exception as arguments to the supplied function.
|
<U> CompletableFuture<U> |
CompletableFuture.handleAsync(BiFunction<? super T,Throwable,? extends U> fn,
Executor executor) |
<U> CompletionStage<U> |
CompletionStage.handleAsync(BiFunction<? super T,Throwable,? extends U> fn,
Executor executor)
Returns a new CompletionStage that, when this stage completes
either normally or exceptionally, is executed using the
supplied executor, with this stage's result and exception as
arguments to the supplied function.
|
V |
ConcurrentHashMap.merge(K key,
V value,
BiFunction<? super V,? super V,? extends V> remappingFunction)
If the specified key is not already associated with a
(non-null) value, associates it with the given value.
|
V |
ConcurrentSkipListMap.merge(K key,
V value,
BiFunction<? super V,? super V,? extends V> remappingFunction)
If the specified key is not already associated with a value,
associates it with the given value.
|
default V |
ConcurrentMap.merge(K key,
V value,
BiFunction<? super V,? super V,? extends V> remappingFunction)
If the specified key is not already associated with a value or is
associated with null, associates it with the given non-null value.
|
<U> U |
ConcurrentHashMap.reduce(long parallelismThreshold,
BiFunction<? super K,? super V,? extends U> transformer,
BiFunction<? super U,? super U,? extends U> reducer)
Returns the result of accumulating the given transformation
of all (key, value) pairs using the given reducer to
combine values, or null if none.
|
<U> U |
ConcurrentHashMap.reduce(long parallelismThreshold,
BiFunction<? super K,? super V,? extends U> transformer,
BiFunction<? super U,? super U,? extends U> reducer)
Returns the result of accumulating the given transformation
of all (key, value) pairs using the given reducer to
combine values, or null if none.
|
Map.Entry<K,V> |
ConcurrentHashMap.reduceEntries(long parallelismThreshold,
BiFunction<Map.Entry<K,V>,Map.Entry<K,V>,? extends Map.Entry<K,V>> reducer)
Returns the result of accumulating all entries using the
given reducer to combine values, or null if none.
|
<U> U |
ConcurrentHashMap.reduceEntries(long parallelismThreshold,
Function<Map.Entry<K,V>,? extends U> transformer,
BiFunction<? super U,? super U,? extends U> reducer)
Returns the result of accumulating the given transformation
of all entries using the given reducer to combine values,
or null if none.
|
K |
ConcurrentHashMap.reduceKeys(long parallelismThreshold,
BiFunction<? super K,? super K,? extends K> reducer)
Returns the result of accumulating all keys using the given
reducer to combine values, or null if none.
|
<U> U |
ConcurrentHashMap.reduceKeys(long parallelismThreshold,
Function<? super K,? extends U> transformer,
BiFunction<? super U,? super U,? extends U> reducer)
Returns the result of accumulating the given transformation
of all keys using the given reducer to combine values, or
null if none.
|
V |
ConcurrentHashMap.reduceValues(long parallelismThreshold,
BiFunction<? super V,? super V,? extends V> reducer)
Returns the result of accumulating all values using the
given reducer to combine values, or null if none.
|
<U> U |
ConcurrentHashMap.reduceValues(long parallelismThreshold,
Function<? super V,? extends U> transformer,
BiFunction<? super U,? super U,? extends U> reducer)
Returns the result of accumulating the given transformation
of all values using the given reducer to combine values, or
null if none.
|
void |
ConcurrentHashMap.replaceAll(BiFunction<? super K,? super V,? extends V> function) |
void |
ConcurrentSkipListMap.replaceAll(BiFunction<? super K,? super V,? extends V> function) |
default void |
ConcurrentMap.replaceAll(BiFunction<? super K,? super V,? extends V> function)
Replaces each entry's value with the result of invoking the given
function on that entry until all entries have been processed or the
function throws an exception.
|
<U> U |
ConcurrentHashMap.search(long parallelismThreshold,
BiFunction<? super K,? super V,? extends U> searchFunction)
Returns a non-null result from applying the given search
function on each (key, value), or null if none.
|
<U,V> CompletableFuture<V> |
CompletableFuture.thenCombine(CompletionStage<? extends U> other,
BiFunction<? super T,? super U,? extends V> fn) |
<U,V> CompletionStage<V> |
CompletionStage.thenCombine(CompletionStage<? extends U> other,
BiFunction<? super T,? super U,? extends V> fn)
Returns a new CompletionStage that, when this and the other
given stage both complete normally, is executed with the two
results as arguments to the supplied function.
|
<U,V> CompletableFuture<V> |
CompletableFuture.thenCombineAsync(CompletionStage<? extends U> other,
BiFunction<? super T,? super U,? extends V> fn) |
<U,V> CompletionStage<V> |
CompletionStage.thenCombineAsync(CompletionStage<? extends U> other,
BiFunction<? super T,? super U,? extends V> fn)
Returns a new CompletionStage that, when this and the other
given stage complete normally, is executed using this stage's
default asynchronous execution facility, with the two results
as arguments to the supplied function.
|
<U,V> CompletableFuture<V> |
CompletableFuture.thenCombineAsync(CompletionStage<? extends U> other,
BiFunction<? super T,? super U,? extends V> fn,
Executor executor) |
<U,V> CompletionStage<V> |
CompletionStage.thenCombineAsync(CompletionStage<? extends U> other,
BiFunction<? super T,? super U,? extends V> fn,
Executor executor)
Returns a new CompletionStage that, when this and the other
given stage complete normally, is executed using the supplied
executor, with the two results as arguments to the supplied
function.
|
Modifier and Type | Interface and Description |
---|---|
interface |
BinaryOperator<T>
Represents an operation upon two operands of the same type, producing a result
of the same type as the operands.
|
Modifier and Type | Method and Description |
---|---|
default <V> BiFunction<T,U,V> |
BiFunction.andThen(Function<? super R,? extends V> after)
Returns a composed function that first applies this function to
its input, and then applies the
after function to the result. |
Modifier and Type | Method and Description |
---|---|
<U> U |
Stream.reduce(U identity,
BiFunction<U,? super T,U> accumulator,
BinaryOperator<U> combiner)
Performs a reduction on the
elements of this stream, using the provided identity, accumulation and
combining functions.
|
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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