Package | Description |
---|---|
java.io |
Provides for system input and output through data streams,
serialization and the file system.
|
java.nio.file |
Defines interfaces and classes for the Java virtual machine to access files,
file attributes, and file systems.
|
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.jar |
Provides classes for reading and writing the JAR (Java ARchive) file
format, which is based on the standard ZIP file format with an
optional manifest file.
|
java.util.regex |
Classes for matching character sequences against patterns specified by regular
expressions.
|
java.util.stream |
Classes to support functional-style operations on streams of elements, such
as map-reduce transformations on collections.
|
java.util.zip |
Provides classes for reading and writing the standard ZIP and GZIP
file formats.
|
Modifier and Type | Method and Description |
---|---|
Stream<String> |
BufferedReader.lines()
Returns a
Stream , the elements of which are lines read from
this BufferedReader . |
Modifier and Type | Method and Description |
---|---|
static Stream<Path> |
Files.find(Path start,
int maxDepth,
BiPredicate<Path,BasicFileAttributes> matcher,
FileVisitOption... options)
Return a
Stream that is lazily populated with Path by searching for files in a file tree rooted at a given starting
file. |
static Stream<String> |
Files.lines(Path path)
Read all lines from a file as a
Stream . |
static Stream<String> |
Files.lines(Path path,
Charset cs)
Read all lines from a file as a
Stream . |
static Stream<Path> |
Files.list(Path dir)
Return a lazily populated
Stream , the elements of
which are the entries in the directory. |
static Stream<Path> |
Files.walk(Path start,
FileVisitOption... options)
Return a
Stream that is lazily populated with Path by walking the file tree rooted at a given starting file. |
static Stream<Path> |
Files.walk(Path start,
int maxDepth,
FileVisitOption... options)
Return a
Stream that is lazily populated with Path by walking the file tree rooted at a given starting file. |
Modifier and Type | Method and Description |
---|---|
default Stream<E> |
Collection.parallelStream()
Returns a possibly parallel
Stream with this collection as its
source. |
default Stream<E> |
Collection.stream()
Returns a sequential
Stream with this collection as its source. |
static <T> Stream<T> |
Arrays.stream(T[] array)
Returns a sequential
Stream with the specified array as its
source. |
static <T> Stream<T> |
Arrays.stream(T[] array,
int startInclusive,
int endExclusive)
Returns a sequential
Stream with the specified range of the
specified array as its source. |
Modifier and Type | Method and Description |
---|---|
Stream<JarEntry> |
JarFile.stream() |
Modifier and Type | Method and Description |
---|---|
Stream<String> |
Pattern.splitAsStream(CharSequence input)
Creates a stream from the given input sequence around matches of this
pattern.
|
Modifier and Type | Method and Description |
---|---|
Stream<Double> |
DoubleStream.boxed()
Returns a
Stream consisting of the elements of this stream,
boxed to Double . |
Stream<Long> |
LongStream.boxed()
Returns a
Stream consisting of the elements of this stream,
each boxed to a Long . |
Stream<Integer> |
IntStream.boxed()
Returns a
Stream consisting of the elements of this stream,
each boxed to an Integer . |
Stream<T> |
Stream.Builder.build()
Builds the stream, transitioning this builder to the built state.
|
static <T> Stream<T> |
Stream.concat(Stream<? extends T> a,
Stream<? extends T> b)
Creates a lazily concatenated stream whose elements are all the
elements of the first stream followed by all the elements of the
second stream.
|
Stream<T> |
Stream.distinct()
Returns a stream consisting of the distinct elements (according to
Object.equals(Object) ) of this stream. |
static <T> Stream<T> |
Stream.empty()
Returns an empty sequential
Stream . |
Stream<T> |
Stream.filter(Predicate<? super T> predicate)
Returns a stream consisting of the elements of this stream that match
the given predicate.
|
<R> Stream<R> |
Stream.flatMap(Function<? super T,? extends Stream<? extends R>> mapper)
Returns a stream consisting of the results of replacing each element of
this stream with the contents of a mapped stream produced by applying
the provided mapping function to each element.
|
static <T> Stream<T> |
Stream.generate(Supplier<T> s)
Returns an infinite sequential unordered stream where each element is
generated by the provided
Supplier . |
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. |
Stream<T> |
Stream.limit(long maxSize)
Returns a stream consisting of the elements of this stream, truncated
to be no longer than
maxSize in length. |
<R> Stream<R> |
Stream.map(Function<? super T,? extends R> mapper)
Returns a stream consisting of the results of applying the given
function to the elements of this stream.
|
<U> Stream<U> |
DoubleStream.mapToObj(DoubleFunction<? extends U> mapper)
Returns an object-valued
Stream consisting of the results of
applying the given function to the elements of this stream. |
<U> Stream<U> |
IntStream.mapToObj(IntFunction<? extends U> mapper)
Returns an object-valued
Stream consisting of the results of
applying the given function to the elements of this stream. |
<U> Stream<U> |
LongStream.mapToObj(LongFunction<? extends U> mapper)
Returns an object-valued
Stream consisting of the results of
applying the given function to the elements of this stream. |
static <T> Stream<T> |
Stream.of(T... values)
Returns a sequential ordered stream whose elements are the specified values.
|
static <T> Stream<T> |
Stream.of(T t)
Returns a sequential
Stream containing a single element. |
Stream<T> |
Stream.peek(Consumer<? super T> action)
Returns a stream consisting of the elements of this stream, additionally
performing the provided action on each element as elements are consumed
from the resulting stream.
|
Stream<T> |
Stream.skip(long n)
Returns a stream consisting of the remaining elements of this stream
after discarding the first
n elements of the stream. |
Stream<T> |
Stream.sorted()
Returns a stream consisting of the elements of this stream, sorted
according to natural order.
|
Stream<T> |
Stream.sorted(Comparator<? super T> comparator)
Returns a stream consisting of the elements of this stream, sorted
according to the provided
Comparator . |
static <T> Stream<T> |
StreamSupport.stream(Spliterator<T> spliterator,
boolean parallel)
Creates a new sequential or parallel
Stream from a
Spliterator . |
static <T> Stream<T> |
StreamSupport.stream(Supplier<? extends Spliterator<T>> supplier,
int characteristics,
boolean parallel)
Creates a new sequential or parallel
Stream from a
Supplier of Spliterator . |
Modifier and Type | Method and Description |
---|---|
static <T> Stream<T> |
Stream.concat(Stream<? extends T> a,
Stream<? extends T> b)
Creates a lazily concatenated stream whose elements are all the
elements of the first stream followed by all the elements of the
second stream.
|
static <T> Stream<T> |
Stream.concat(Stream<? extends T> a,
Stream<? extends T> b)
Creates a lazily concatenated stream whose elements are all the
elements of the first stream followed by all the elements of the
second stream.
|
Modifier and Type | Method and Description |
---|---|
<R> Stream<R> |
Stream.flatMap(Function<? super T,? extends Stream<? extends R>> mapper)
Returns a stream consisting of the results of replacing each element of
this stream with the contents of a mapped stream produced by applying
the provided mapping function to each element.
|
Modifier and Type | Method and Description |
---|---|
Stream<? extends ZipEntry> |
ZipFile.stream()
Return an ordered
Stream over the ZIP file entries. |
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