| Package | Description | 
|---|---|
| java.time.temporal | 
 
 Access to date and time using fields and units, and date time adjusters. 
 | 
| 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.concurrent.atomic | 
 A small toolkit of classes that support lock-free thread-safe
 programming on single variables. 
 | 
| 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 | 
|---|---|
static TemporalAdjuster | 
TemporalAdjusters.ofDateAdjuster(UnaryOperator<LocalDate> dateBasedAdjuster)
Obtains a  
TemporalAdjuster that wraps a date adjuster. | 
| Modifier and Type | Method and Description | 
|---|---|
void | 
ArrayList.replaceAll(UnaryOperator<E> operator)  | 
default void | 
List.replaceAll(UnaryOperator<E> operator)
Replaces each element of this list with the result of applying the
 operator to that element. 
 | 
void | 
Vector.replaceAll(UnaryOperator<E> operator)  | 
| Modifier and Type | Method and Description | 
|---|---|
void | 
CopyOnWriteArrayList.replaceAll(UnaryOperator<E> operator)  | 
| Modifier and Type | Method and Description | 
|---|---|
E | 
AtomicReferenceArray.getAndUpdate(int i,
            UnaryOperator<E> updateFunction)
Atomically updates the element at index  
i with the results
 of applying the given function, returning the previous value. | 
V | 
AtomicReferenceFieldUpdater.getAndUpdate(T obj,
            UnaryOperator<V> updateFunction)
Atomically updates the field of the given object managed by this updater
 with the results of applying the given function, returning the previous
 value. 
 | 
V | 
AtomicReference.getAndUpdate(UnaryOperator<V> updateFunction)
Atomically updates the current value with the results of
 applying the given function, returning the previous value. 
 | 
E | 
AtomicReferenceArray.updateAndGet(int i,
            UnaryOperator<E> updateFunction)
Atomically updates the element at index  
i with the results
 of applying the given function, returning the updated value. | 
V | 
AtomicReferenceFieldUpdater.updateAndGet(T obj,
            UnaryOperator<V> updateFunction)
Atomically updates the field of the given object managed by this updater
 with the results of applying the given function, returning the updated
 value. 
 | 
V | 
AtomicReference.updateAndGet(UnaryOperator<V> updateFunction)
Atomically updates the current value with the results of
 applying the given function, returning the updated value. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
static <T> UnaryOperator<T> | 
UnaryOperator.identity()
Returns a unary operator that always returns its input argument. 
 | 
| Modifier and Type | Method and Description | 
|---|---|
static <T> Stream<T> | 
Stream.iterate(T seed,
       UnaryOperator<T> f)
Returns an infinite sequential ordered  
Stream produced by iterative
 application of a function f to an initial element seed,
 producing a Stream consisting of seed, f(seed),
 f(f(seed)), etc. | 
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