Scala Library: scala.collection.JavaConversions
scala.collection.JavaConversions
A collection of implicit conversions supporting interoperability between Scala and Java collections.
The following conversions are supported:
In all cases, converting from a source type to a target type and back again will return the original source object, eg.
In addition, the following one way conversions are provided:
- Source
- Since
- 2.8
Value Members From scala.collection.convert.WrapAsJava
implicit def asJavaCollection[A](it: Iterable[A]): Collection[A]
Implicitly converts a Scala Iterable to an immutable Java Collection.
If the Scala Iterable was previously obtained from an implicit or explicit call
of asSizedIterable(java.util.Collection)
then the original Java Collection
will be returned.
- it
- The SizedIterable to be converted.
- returns
- A Java Collection view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def asJavaDictionary[A, B](m: mutable.Map[A, B]): Dictionary[A, B]
Implicitly converts a Scala mutable Map
to a Java Dictionary
.
The returned Java Dictionary
is backed by the provided Scala Dictionary
and
any side-effects of using it via the Java interface will be visible via the
Scala interface and vice versa.
If the Scala Dictionary
was previously obtained from an implicit or explicit
call of asMap(java.util.Dictionary)
then the original Java Dictionary will be
returned.
- m
- The
Map
to be converted.
- The
- returns
- A Java
Dictionary
view of the argument.
- A Java
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def asJavaEnumeration[A](it: Iterator[A]): java.util.Enumeration[A]
Implicitly converts a Scala Iterator to a Java Enumeration. The returned Java Enumeration is backed by the provided Scala Iterator and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Iterator was previously obtained from an implicit or explicit call
of asIterator(java.util.Enumeration)
then the original Java Enumeration will
be returned.
- it
- The Iterator to be converted.
- returns
- A Java Enumeration view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def asJavaIterable[A](i: Iterable[A]): java.lang.Iterable[A]
Implicitly converts a Scala Iterable to a Java Iterable. The returned Java Iterable is backed by the provided Scala Iterable and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Iterable was previously obtained from an implicit or explicit call
of asIterable(java.lang.Iterable)
then the original Java Iterable will be
returned.
- i
- The Iterable to be converted.
- returns
- A Java Iterable view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def asJavaIterator[A](it: Iterator[A]): java.util.Iterator[A]
Implicitly converts a Scala Iterator to a Java Iterator. The returned Java Iterator is backed by the provided Scala Iterator and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Iterator was previously obtained from an implicit or explicit call
of asIterator(java.util.Iterator)
then the original Java Iterator will be
returned.
- it
- The Iterator to be converted.
- returns
- A Java Iterator view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def bufferAsJavaList[A](b: Buffer[A]): java.util.List[A]
Implicitly converts a Scala mutable Buffer to a Java List. The returned Java List is backed by the provided Scala Buffer and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Buffer was previously obtained from an implicit or explicit call of
asBuffer(java.util.List)
then the original Java List will be returned.
- b
- The Buffer to be converted.
- returns
- A Java List view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def mapAsJavaConcurrentMap[A, B](m: concurrent.Map[A, B]): ConcurrentMap[A, B]
Implicitly converts a Scala mutable concurrent.Map
to a Java ConcurrentMap
.
The returned Java ConcurrentMap
is backed by the provided Scala
concurrent.Map
and any side-effects of using it via the Java interface will
be visible via the Scala interface and vice versa.
If the Scala concurrent.Map
was previously obtained from an implicit or
explicit call of mapAsScalaConcurrentMap(java.util.concurrent.ConcurrentMap)
then the original Java ConcurrentMap will be returned.
- m
- The Scala
concurrent.Map
to be converted.
- The Scala
- returns
- A Java
ConcurrentMap
view of the argument.
- A Java
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def mapAsJavaMap[A, B](m: Map[A, B]): java.util.Map[A, B]
Implicitly converts a Scala Map
to a Java Map
.
The returned Java Map
is backed by the provided Scala Map
and any
side-effects of using it via the Java interface will be visible via the Scala
interface and vice versa.
If the Scala Map
was previously obtained from an implicit or explicit call of
asMap(java.util.Map)
then the original Java Map
will be returned.
- m
- The
Map
to be converted.
- The
- returns
- A Java
Map
view of the argument.
- A Java
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def mutableMapAsJavaMap[A, B](m: mutable.Map[A, B]): java.util.Map[A, B]
Implicitly converts a Scala mutable Map to a Java Map. The returned Java Map is backed by the provided Scala Map and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Map was previously obtained from an implicit or explicit call of
asMap(java.util.Map)
then the original Java Map will be returned.
- m
- The Map to be converted.
- returns
- A Java Map view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def mutableSeqAsJavaList[A](seq: mutable.Seq[A]): java.util.List[A]
Implicitly converts a Scala mutable Seq to a Java List. The returned Java List is backed by the provided Scala Seq and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Seq was previously obtained from an implicit or explicit call of
asSeq(java.util.List)
then the original Java List will be returned.
- seq
- The Seq to be converted.
- returns
- A Java List view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def mutableSetAsJavaSet[A](s: mutable.Set[A]): java.util.Set[A]
Implicitly converts a Scala mutable Set to a Java Set. The returned Java Set is backed by the provided Scala Set and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Set was previously obtained from an implicit or explicit call of
asSet(java.util.Set)
then the original Java Set will be returned.
- s
- The Set to be converted.
- returns
- A Java Set view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def seqAsJavaList[A](seq: Seq[A]): java.util.List[A]
Implicitly converts a Scala Seq to a Java List. The returned Java List is backed by the provided Scala Seq and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Seq was previously obtained from an implicit or explicit call of
asSeq(java.util.List)
then the original Java List will be returned.
- seq
- The Seq to be converted.
- returns
- A Java List view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
implicit def setAsJavaSet[A](s: Set[A]): java.util.Set[A]
Implicitly converts a Scala Set to a Java Set. The returned Java Set is backed by the provided Scala Set and any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.
If the Scala Set was previously obtained from an implicit or explicit call of asSet(java.util.Set) then the original Java Set will be returned.
- s
- The Set to be converted.
- returns
- A Java Set view of the argument.
- Definition Classes
- WrapAsJava
(defined at scala.collection.convert.WrapAsJava)
Value Members From scala.collection.convert.WrapAsScala
implicit def asScalaBuffer[A](l: java.util.List[A]): Buffer[A]
Implicitly converts a Java List
to a Scala mutable Buffer
.
The returned Scala Buffer
is backed by the provided Java List
and any
side-effects of using it via the Scala interface will be visible via the Java
interface and vice versa.
If the Java List
was previously obtained from an implicit or explicit call of
asScalaBuffer(scala.collection.mutable.Buffer)
then the original Scala
Buffer
will be returned.
- l
- The
List
to be converted.
- The
- returns
- A Scala mutable
Buffer
view of the argument.
- A Scala mutable
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def asScalaIterator[A](it: java.util.Iterator[A]): Iterator[A]
Implicitly converts a Java Iterator
to a Scala Iterator
.
The returned Scala Iterator
is backed by the provided Java Iterator
and any
side-effects of using it via the Scala interface will be visible via the Java
interface and vice versa.
If the Java Iterator
was previously obtained from an implicit or explicit call
of asIterator(scala.collection.Iterator)
then the original Scala Iterator
will be returned.
- it
- The
Iterator
to be converted.
- The
- returns
- A Scala
Iterator
view of the argument.
- A Scala
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def asScalaSet[A](s: java.util.Set[A]): mutable.Set[A]
Implicitly converts a Java Set to a Scala mutable Set. The returned Scala Set is backed by the provided Java Set and any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.
If the Java Set was previously obtained from an implicit or explicit call of
asScalaSet(scala.collection.mutable.Set)
then the original Scala Set will be
returned.
- s
- The Set to be converted.
- returns
- A Scala mutable Set view of the argument.
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def collectionAsScalaIterable[A](i: Collection[A]): Iterable[A]
Implicitly converts a Java Collection
to an Scala Iterable
.
If the Java Collection
was previously obtained from an implicit or explicit
call of collectionAsScalaIterable(scala.collection.SizedIterable)
then the
original Scala Iterable
will be returned.
- i
- The Collection to be converted.
- returns
- A Scala Iterable view of the argument.
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def dictionaryAsScalaMap[A, B](p: Dictionary[A, B]): mutable.Map[A, B]
Implicitly converts a Java Dictionary
to a Scala mutable Map
.
The returned Scala Map
is backed by the provided Java Dictionary
and any
side-effects of using it via the Scala interface will be visible via the Java
interface and vice versa.
- p
- The Dictionary to be converted.
- returns
- A Scala mutable Map view of the argument.
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def enumerationAsScalaIterator[A](i: java.util.Enumeration[A]): Iterator[A]
Implicitly converts a Java Enumeration to a Scala Iterator. The returned Scala Iterator is backed by the provided Java Enumeration and any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.
If the Java Enumeration was previously obtained from an implicit or explicit
call of enumerationAsScalaIterator(scala.collection.Iterator)
then the
original Scala Iterator will be returned.
- i
- The Enumeration to be converted.
- returns
- A Scala Iterator view of the argument.
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def iterableAsScalaIterable[A](i: java.lang.Iterable[A]): Iterable[A]
Implicitly converts a Java Iterable
to a Scala Iterable
.
The returned Scala Iterable
is backed by the provided Java Iterable
and any
side-effects of using it via the Scala interface will be visible via the Java
interface and vice versa.
If the Java Iterable
was previously obtained from an implicit or explicit call
of iterableAsScalaIterable(scala.collection.Iterable)
then the original Scala
Iterable will be returned.
- i
- The Iterable to be converted.
- returns
- A Scala Iterable view of the argument.
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def mapAsScalaConcurrentMap[A, B](m: ConcurrentMap[A, B]): concurrent.Map[A, B]
Implicitly converts a Java ConcurrentMap to a Scala mutable ConcurrentMap. The returned Scala ConcurrentMap is backed by the provided Java ConcurrentMap and any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.
If the Java ConcurrentMap was previously obtained from an implicit or explicit
call of asConcurrentMap(scala.collection.mutable.ConcurrentMap)
then the
original Scala ConcurrentMap will be returned.
- m
- The ConcurrentMap to be converted.
- returns
- A Scala mutable ConcurrentMap view of the argument.
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def mapAsScalaMap[A, B](m: java.util.Map[A, B]): mutable.Map[A, B]
Implicitly converts a Java Map
to a Scala mutable Map
.
The returned Scala Map
is backed by the provided Java Map
and any
side-effects of using it via the Scala interface will be visible via the Java
interface and vice versa.
If the Java Map
was previously obtained from an implicit or explicit call of
mapAsScalaMap(scala.collection.mutable.Map)
then the original Scala Map will
be returned.
If the wrapped map is synchronized (e.g. from
java.util.Collections.synchronizedMap
), it is your responsibility to wrap
all non-atomic operations with underlying.synchronized
. This includes get
,
as java.util.Map
‘s API does not allow for an atomic get
when null
values
may be present.
- m
- The Map to be converted.
- returns
- A Scala mutable Map view of the argument.
- Definition Classes
- WrapAsScala
(defined at scala.collection.convert.WrapAsScala)
implicit def propertiesAsScalaMap(p: Properties): mutable.Map[String, String]
Implicitly converts a Java Properties
to a Scala
mutable Map[String, String]
.
The returned Scala Map[String, String]
is backed by the provided Java
Properties
and any side-effects of using it via the Scala interface will be
visible via the Java interface and vice versa.
- p
- The Properties to be converted.
- returns
- A Scala mutable Map[String, String] view of the argument.
- Definition Classes
- WrapAsScala (defined at scala.collection.convert.WrapAsScala)
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