object JavaConverters extends DecorateAsJava with DecorateAsScala
A variety of decorators that enable converting between
Scala and Java collections using extension methods, asScala and asJava.
The extension methods return adapters for the corresponding API.
The following conversions are supported via asScala and asJava:
scala.collection.Iterable <=> java.lang.Iterable scala.collection.Iterator <=> java.util.Iterator scala.collection.mutable.Buffer <=> java.util.List scala.collection.mutable.Set <=> java.util.Set scala.collection.mutable.Map <=> java.util.Map scala.collection.concurrent.Map <=> java.util.concurrent.ConcurrentMap
The following conversions are supported via asScala and through
specially-named extension methods to convert to Java collections, as shown:
scala.collection.Iterable <=> java.util.Collection (via asJavaCollection) scala.collection.Iterator <=> java.util.Enumeration (via asJavaEnumeration) scala.collection.mutable.Map <=> java.util.Dictionary (via asJavaDictionary)
In addition, the following one-way conversions are provided via asJava:
scala.collection.Seq => java.util.List scala.collection.mutable.Seq => java.util.List scala.collection.Set => java.util.Set scala.collection.Map => java.util.Map
The following one way conversion is provided via asScala:
java.util.Properties => scala.collection.mutable.Map
In all cases, converting from a source type to a target type and back again will return the original source object. For example:
import scala.collection.JavaConverters._ val source = new scala.collection.mutable.ListBuffer[Int] val target: java.util.List[Int] = source.asJava val other: scala.collection.mutable.Buffer[Int] = target.asScala assert(source eq other)
Alternatively, the conversion methods have descriptive names and can be invoked explicitly.
scala> val vs = java.util.Arrays.asList("hi", "bye") vs: java.util.List[String] = [hi, bye] scala> val ss = asScalaIterator(vs.iterator) ss: Iterator[String] = non-empty iterator scala> .toList res0: List[String] = List(hi, bye) scala> val ss = asScalaBuffer(vs) ss: scala.collection.mutable.Buffer[String] = Buffer(hi, bye)
- Source
- JavaConverters.scala
- Since
2.8.1
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- JavaConverters
- DecorateAsScala
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-
final
def
!=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
- returns
trueif !(this == that), false otherwise.
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
Equivalent to
x.hashCodeexcept for boxed numeric types andnull.Equivalent to
x.hashCodeexcept for boxed numeric types andnull. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. Fornullreturns a hashcode wherenull.hashCodethrows aNullPointerException.- returns
a hash value consistent with ==
- Definition Classes
- AnyRef → Any
-
final
def
==(arg0: Any): Boolean
The expression
x == thatis equivalent toif (x eq null) that eq null else x.equals(that).The expression
x == thatis equivalent toif (x eq null) that eq null else x.equals(that).- returns
trueif the receiver object is equivalent to the argument;falseotherwise.
- Definition Classes
- AnyRef → Any
-
final
def
asInstanceOf[T0]: T0
Cast the receiver object to be of type
T0.Cast the receiver object to be of type
T0.Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression
1.asInstanceOf[String]will throw aClassCastExceptionat runtime, while the expressionList(1).asInstanceOf[List[String]]will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.- returns
the receiver object.
- Definition Classes
- Any
- Exceptions thrown
ClassCastExceptionif the receiver object is not an instance of the erasure of typeT0.
-
def
asJavaCollection[A](i: Iterable[A]): Collection[A]
Converts a Scala
Iterableto an immutable JavaCollection.Converts a Scala
Iterableto an immutable JavaCollection.If the Scala
Iterablewas previously obtained from an implicit or explicit call ofJavaConverters.collectionAsScalaIterable(java.util.Collection)then the original JavaCollectionwill be returned.- i
The Scala
Iterableto be converted.- returns
A Java
Collectionview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
asJavaCollectionConverter[A](i: Iterable[A]): AsJavaCollection[A]
Adds an
asJavaCollectionmethod that implicitly converts a ScalaIterableto an immutable JavaCollection.Adds an
asJavaCollectionmethod that implicitly converts a ScalaIterableto an immutable JavaCollection.- Definition Classes
- DecorateAsJava
- See also
-
def
asJavaDictionary[A, B](m: mutable.Map[A, B]): Dictionary[A, B]
Converts a Scala mutable
Mapto a JavaDictionary.Converts a Scala mutable
Mapto a JavaDictionary.The returned Java
Dictionaryis backed by the provided ScalaDictionaryand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Dictionarywas previously obtained from an implicit or explicit call ofJavaConverters.dictionaryAsScalaMap(java.util.Dictionary)then the original JavaDictionarywill be returned.- m
The Scala
Mapto be converted.- returns
A Java
Dictionaryview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
asJavaDictionaryConverter[A, B](m: mutable.Map[A, B]): AsJavaDictionary[A, B]
Adds an
asJavaDictionarymethod that implicitly converts a Scala mutableMapto a JavaDictionary.Adds an
asJavaDictionarymethod that implicitly converts a Scala mutableMapto a JavaDictionary.- Definition Classes
- DecorateAsJava
- See also
-
def
asJavaEnumeration[A](i: Iterator[A]): java.util.Enumeration[A]
Converts a Scala
Iteratorto a JavaEnumeration.Converts a Scala
Iteratorto a JavaEnumeration.The returned Java
Enumerationis backed by the provided ScalaIteratorand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Iteratorwas previously obtained from an implicit or explicit call ofJavaConverters.enumerationAsScalaIterator(java.util.Enumeration)then the original JavaEnumerationwill be returned.- i
The Scala
Iteratorto be converted.- returns
A Java
Enumerationview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
asJavaEnumerationConverter[A](i: Iterator[A]): AsJavaEnumeration[A]
Adds an
asJavaEnumerationmethod that implicitly converts a ScalaIteratorto a JavaEnumeration.Adds an
asJavaEnumerationmethod that implicitly converts a ScalaIteratorto a JavaEnumeration.- Definition Classes
- DecorateAsJava
- See also
-
def
asJavaIterable[A](i: Iterable[A]): java.lang.Iterable[A]
Converts a Scala
Iterableto a JavaIterable.Converts a Scala
Iterableto a JavaIterable.The returned Java
Iterableis backed by the provided ScalaIterableand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Iterablewas previously obtained from an implicit or explicit call ofJavaConverters.iterableAsScalaIterable(java.lang.Iterable)then the original JavaIterablewill be returned.- i
The Scala
Iterableto be converted.- returns
A Java
Iterableview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
asJavaIterableConverter[A](i: Iterable[A]): AsJava[java.lang.Iterable[A]]
Adds an
asJavamethod that implicitly converts a ScalaIterableto a JavaIterable.Adds an
asJavamethod that implicitly converts a ScalaIterableto a JavaIterable.- Definition Classes
- DecorateAsJava
- See also
-
def
asJavaIterator[A](i: Iterator[A]): java.util.Iterator[A]
Converts a Scala
Iteratorto a JavaIterator.Converts a Scala
Iteratorto a JavaIterator.The returned Java
Iteratoris backed by the provided ScalaIteratorand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Iteratorwas previously obtained from an implicit or explicit call ofJavaConverters.asScalaIterator(java.util.Iterator)then the original JavaIteratorwill be returned.- i
The Scala
Iteratorto be converted.- returns
A Java
Iteratorview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
asJavaIteratorConverter[A](i: Iterator[A]): AsJava[java.util.Iterator[A]]
Adds an
asJavamethod that implicitly converts a ScalaIteratorto a JavaIterator.Adds an
asJavamethod that implicitly converts a ScalaIteratorto a JavaIterator.- Definition Classes
- DecorateAsJava
- See also
-
def
asScalaBuffer[A](l: java.util.List[A]): Buffer[A]
Converts a Java
Listto a Scala mutableBuffer.Converts a Java
Listto a Scala mutableBuffer.The returned Scala
Bufferis backed by the provided JavaListand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.If the Java
Listwas previously obtained from an implicit or explicit call ofJavaConverters.bufferAsJavaList(scala.collection.mutable.Buffer)then the original ScalaBufferwill be returned.- l
The Java
Listto be converted.- returns
A Scala mutable
Bufferview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
asScalaBufferConverter[A](l: java.util.List[A]): AsScala[Buffer[A]]
Adds an
asScalamethod that implicitly converts a JavaListto a Scala mutableBuffer.Adds an
asScalamethod that implicitly converts a JavaListto a Scala mutableBuffer.- Definition Classes
- DecorateAsScala
- See also
-
def
asScalaIterator[A](i: java.util.Iterator[A]): Iterator[A]
Converts a Java
Iteratorto a ScalaIterator.Converts a Java
Iteratorto a ScalaIterator.The returned Scala
Iteratoris backed by the provided JavaIteratorand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.If the Java
Iteratorwas previously obtained from an implicit or explicit call ofJavaConverters.asJavaIterator(scala.collection.Iterator)then the original ScalaIteratorwill be returned.- i
The Java
Iteratorto be converted.- returns
A Scala
Iteratorview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
asScalaIteratorConverter[A](i: java.util.Iterator[A]): AsScala[Iterator[A]]
Adds an
asScalamethod that implicitly converts a JavaIteratorto a ScalaIterator.Adds an
asScalamethod that implicitly converts a JavaIteratorto a ScalaIterator.- Definition Classes
- DecorateAsScala
- See also
-
def
asScalaSet[A](s: java.util.Set[A]): mutable.Set[A]
Converts a Java
Setto a Scala mutableSet.Converts a Java
Setto a Scala mutableSet.The returned Scala
Setis backed by the provided JavaSetand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.If the Java
Setwas previously obtained from an implicit or explicit call ofJavaConverters.mutableSetAsJavaSet(scala.collection.mutable.Set)then the original ScalaSetwill be returned.- s
The Java
Setto be converted.- returns
A Scala mutable
Setview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
asScalaSetConverter[A](s: java.util.Set[A]): AsScala[mutable.Set[A]]
Adds an
asScalamethod that implicitly converts a JavaSetto a Scala mutableSet.Adds an
asScalamethod that implicitly converts a JavaSetto a Scala mutableSet.- Definition Classes
- DecorateAsScala
- See also
-
def
bufferAsJavaList[A](b: Buffer[A]): java.util.List[A]
Converts a Scala mutable
Bufferto a Java List.Converts a Scala mutable
Bufferto a Java List.The returned Java List is backed by the provided Scala
Bufferand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Bufferwas previously obtained from an implicit or explicit call ofJavaConverters.asScalaBuffer(java.util.List)then the original JavaListwill be returned.- b
The Scala
Bufferto be converted.- returns
A Java
Listview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
bufferAsJavaListConverter[A](b: Buffer[A]): AsJava[java.util.List[A]]
Adds an
asJavamethod that implicitly converts a Scala mutableBufferto a JavaList.Adds an
asJavamethod that implicitly converts a Scala mutableBufferto a JavaList.- Definition Classes
- DecorateAsJava
- See also
-
def
clone(): AnyRef
Create a copy of the receiver object.
-
def
collectionAsScalaIterable[A](i: Collection[A]): Iterable[A]
Converts a Java
Collectionto an ScalaIterable.Converts a Java
Collectionto an ScalaIterable.If the Java
Collectionwas previously obtained from an implicit or explicit call ofJavaConverters.asJavaCollection(scala.collection.Iterable)then the original ScalaIterablewill be returned.- i
The Java
Collectionto be converted.- returns
A Scala
Iterableview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
collectionAsScalaIterableConverter[A](i: Collection[A]): AsScala[Iterable[A]]
Adds an
asScalamethod that implicitly converts a JavaCollectionto an ScalaIterable.Adds an
asScalamethod that implicitly converts a JavaCollectionto an ScalaIterable.- Definition Classes
- DecorateAsScala
- See also
-
def
dictionaryAsScalaMap[A, B](p: Dictionary[A, B]): mutable.Map[A, B]
Converts a Java
Dictionaryto a Scala mutableMap.Converts a Java
Dictionaryto a Scala mutableMap.The returned Scala
Mapis backed by the provided JavaDictionaryand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.If the Java
Dictionarywas previously obtained from an implicit or explicit call ofJavaConverters.asJavaDictionary(scala.collection.mutable.Map)then the original ScalaMapwill be returned.- p
The Java
Dictionaryto be converted.- returns
A Scala mutable
Mapview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
dictionaryAsScalaMapConverter[A, B](p: Dictionary[A, B]): AsScala[mutable.Map[A, B]]
Adds an
asScalamethod that implicitly converts a JavaDictionaryto a Scala mutableMap.Adds an
asScalamethod that implicitly converts a JavaDictionaryto a Scala mutableMap.- Definition Classes
- DecorateAsScala
- See also
-
def
enumerationAsScalaIterator[A](i: java.util.Enumeration[A]): Iterator[A]
Converts a Java
Enumerationto a ScalaIterator.Converts a Java
Enumerationto a ScalaIterator.The returned Scala
Iteratoris backed by the provided JavaEnumerationand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.If the Java
Enumerationwas previously obtained from an implicit or explicit call ofJavaConverters.asJavaEnumeration(scala.collection.Iterator)then the original ScalaIteratorwill be returned.- i
The Java
Enumerationto be converted.- returns
A Scala
Iteratorview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
enumerationAsScalaIteratorConverter[A](i: java.util.Enumeration[A]): AsScala[Iterator[A]]
Adds an
asScalamethod that implicitly converts a JavaEnumerationto a ScalaIterator.Adds an
asScalamethod that implicitly converts a JavaEnumerationto a ScalaIterator.- Definition Classes
- DecorateAsScala
- See also
-
final
def
eq(arg0: AnyRef): Boolean
Tests whether the argument (
that) is a reference to the receiver object (this).Tests whether the argument (
that) is a reference to the receiver object (this).The
eqmethod implements an equivalence relation on non-null instances ofAnyRef, and has three additional properties:- It is consistent: for any non-null instances
xandyof typeAnyRef, multiple invocations ofx.eq(y)consistently returnstrueor consistently returnsfalse. - For any non-null instance
xof typeAnyRef,x.eq(null)andnull.eq(x)returnsfalse. null.eq(null)returnstrue.
When overriding the
equalsorhashCodemethods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).- returns
trueif the argument is a reference to the receiver object;falseotherwise.
- Definition Classes
- AnyRef
- It is consistent: for any non-null instances
-
def
equals(arg0: Any): Boolean
The equality method for reference types.
-
def
finalize(): Unit
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the
finalizemethod is invoked, as well as the interaction betweenfinalizeand non-local returns and exceptions, are all platform dependent. -
final
def
getClass(): Class[_]
Returns the runtime class representation of the object.
-
def
hashCode(): Int
The hashCode method for reference types.
-
final
def
isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object is
T0.Test whether the dynamic type of the receiver object is
T0.Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression
1.isInstanceOf[String]will returnfalse, while the expressionList(1).isInstanceOf[List[String]]will returntrue. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.- returns
trueif the receiver object is an instance of erasure of typeT0;falseotherwise.
- Definition Classes
- Any
-
def
iterableAsScalaIterable[A](i: java.lang.Iterable[A]): Iterable[A]
Converts a Java
Iterableto a ScalaIterable.Converts a Java
Iterableto a ScalaIterable.The returned Scala
Iterableis backed by the provided JavaIterableand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.If the Java
Iterablewas previously obtained from an implicit or explicit call ofJavaConverters.asJavaIterable(scala.collection.Iterable) then the original ScalaIterablewill be returned.- i
The Java
Iterableto be converted.- returns
A Scala
Iterableview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
iterableAsScalaIterableConverter[A](i: java.lang.Iterable[A]): AsScala[Iterable[A]]
Adds an
asScalamethod that implicitly converts a JavaIterableto a ScalaIterable.Adds an
asScalamethod that implicitly converts a JavaIterableto a ScalaIterable.- Definition Classes
- DecorateAsScala
- See also
-
def
mapAsJavaConcurrentMap[A, B](m: concurrent.Map[A, B]): ConcurrentMap[A, B]
Converts a Scala mutable
concurrent.Mapto a JavaConcurrentMap.Converts a Scala mutable
concurrent.Mapto a JavaConcurrentMap.The returned Java
ConcurrentMapis backed by the provided Scalaconcurrent.Mapand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
concurrent.Mapwas previously obtained from an implicit or explicit call ofJavaConverters.mapAsScalaConcurrentMap(java.util.concurrent.ConcurrentMap)then the original JavaConcurrentMapwill be returned.- m
The Scala
concurrent.Mapto be converted.- returns
A Java
ConcurrentMapview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
mapAsJavaConcurrentMapConverter[A, B](m: concurrent.Map[A, B]): AsJava[ConcurrentMap[A, B]]
Adds an
asJavamethod that implicitly converts a Scala mutableconcurrent.Mapto a JavaConcurrentMap.Adds an
asJavamethod that implicitly converts a Scala mutableconcurrent.Mapto a JavaConcurrentMap.- Definition Classes
- DecorateAsJava
- See also
-
def
mapAsJavaMap[A, B](m: Map[A, B]): java.util.Map[A, B]
Converts a Scala
Mapto a JavaMap.Converts a Scala
Mapto a JavaMap.The returned Java
Mapis backed by the provided ScalaMapand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Mapwas previously obtained from an implicit or explicit call ofJavaConverters.mapAsScalaMap(java.util.Map)then the original JavaMapwill be returned.- m
The Scala
Mapto be converted.- returns
A Java
Mapview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
mapAsJavaMapConverter[A, B](m: Map[A, B]): AsJava[java.util.Map[A, B]]
Adds an
asJavamethod that implicitly converts a ScalaMapto a JavaMap.Adds an
asJavamethod that implicitly converts a ScalaMapto a JavaMap.- Definition Classes
- DecorateAsJava
- See also
-
def
mapAsScalaConcurrentMap[A, B](m: ConcurrentMap[A, B]): concurrent.Map[A, B]
Converts a Java
ConcurrentMapto a Scala mutableConcurrentMap.Converts a Java
ConcurrentMapto a Scala mutableConcurrentMap.The returned Scala
ConcurrentMapis backed by the provided JavaConcurrentMapand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.If the Java
ConcurrentMapwas previously obtained from an implicit or explicit call ofJavaConverters.mapAsJavaConcurrentMap(scala.collection.mutable.ConcurrentMap)then the original ScalaConcurrentMapwill be returned.- m
The Java
ConcurrentMapto be converted.- returns
A Scala mutable
ConcurrentMapview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
mapAsScalaConcurrentMapConverter[A, B](m: ConcurrentMap[A, B]): AsScala[concurrent.Map[A, B]]
Adds an
asScalamethod that implicitly converts a JavaConcurrentMapto a Scala mutableconcurrent.Map.Adds an
asScalamethod that implicitly converts a JavaConcurrentMapto a Scala mutableconcurrent.Map.- Definition Classes
- DecorateAsScala
- See also
-
def
mapAsScalaMap[A, B](m: java.util.Map[A, B]): mutable.Map[A, B]
Converts a Java
Mapto a Scala mutableMap.Converts a Java
Mapto a Scala mutableMap.The returned Scala
Mapis backed by the provided JavaMapand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.If the Java
Mapwas previously obtained from an implicit or explicit call ofJavaConverters.mutableMapAsJavaMap(scala.collection.mutable.Map)then the original ScalaMapwill 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 withunderlying.synchronized. This includesget, asjava.util.Map's API does not allow for an atomicgetwhennullvalues may be present.- m
The Java
Mapto be converted.- returns
A Scala mutable
Mapview of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
mapAsScalaMapConverter[A, B](m: java.util.Map[A, B]): AsScala[mutable.Map[A, B]]
Adds an
asScalamethod that implicitly converts a JavaMapto a Scala mutableMap.Adds an
asScalamethod that implicitly converts a JavaMapto a Scala mutableMap.- Definition Classes
- DecorateAsScala
- See also
-
def
mutableMapAsJavaMap[A, B](m: mutable.Map[A, B]): java.util.Map[A, B]
Converts a Scala mutable
Mapto a JavaMap.Converts a Scala mutable
Mapto a JavaMap.The returned Java
Mapis backed by the provided ScalaMapand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Mapwas previously obtained from an implicit or explicit call ofJavaConverters.mapAsScalaMap(java.util.Map)then the original JavaMapwill be returned.- m
The Scala mutable
Mapto be converted.- returns
A Java
Mapview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
mutableMapAsJavaMapConverter[A, B](m: mutable.Map[A, B]): AsJava[java.util.Map[A, B]]
Adds an
asJavamethod that implicitly converts a Scala mutableMapto a JavaMap.Adds an
asJavamethod that implicitly converts a Scala mutableMapto a JavaMap.- Definition Classes
- DecorateAsJava
- See also
-
def
mutableSeqAsJavaList[A](s: mutable.Seq[A]): java.util.List[A]
Converts a Scala mutable
Seqto a JavaList.Converts a Scala mutable
Seqto a JavaList.The returned Java
Listis backed by the provided ScalaSeqand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Seqwas previously obtained from an implicit or explicit call ofJavaConverters.asScalaBuffer(java.util.List)then the original JavaListwill be returned.- s
The Scala
Seqto be converted.- returns
A Java
Listview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
mutableSeqAsJavaListConverter[A](b: mutable.Seq[A]): AsJava[java.util.List[A]]
Adds an
asJavamethod that implicitly converts a Scala mutableSeqto a JavaList.Adds an
asJavamethod that implicitly converts a Scala mutableSeqto a JavaList.- Definition Classes
- DecorateAsJava
- See also
-
def
mutableSetAsJavaSet[A](s: mutable.Set[A]): java.util.Set[A]
Converts a Scala mutable
Setto a JavaSet.Converts a Scala mutable
Setto a JavaSet.The returned Java
Setis backed by the provided ScalaSetand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Setwas previously obtained from an implicit or explicit call ofJavaConverters.asScalaSet(java.util.Set)then the original JavaSetwill be returned.- s
The Scala mutable
Setto be converted.- returns
A Java
Setview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
mutableSetAsJavaSetConverter[A](s: mutable.Set[A]): AsJava[java.util.Set[A]]
Adds an
asJavamethod that implicitly converts a Scala mutableSetto a JavaSet.Adds an
asJavamethod that implicitly converts a Scala mutableSetto a JavaSet.- Definition Classes
- DecorateAsJava
- See also
-
final
def
ne(arg0: AnyRef): Boolean
Equivalent to
!(this eq that).Equivalent to
!(this eq that).- returns
trueif the argument is not a reference to the receiver object;falseotherwise.
- Definition Classes
- AnyRef
-
final
def
notify(): Unit
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
- Definition Classes
- AnyRef
- Annotations
- @native()
- Note
not specified by SLS as a member of AnyRef
-
final
def
notifyAll(): Unit
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
- Definition Classes
- AnyRef
- Annotations
- @native()
- Note
not specified by SLS as a member of AnyRef
-
def
propertiesAsScalaMap(p: Properties): mutable.Map[String, String]
Converts a Java
Propertiesto a Scala mutableMap[String, String].Converts a Java
Propertiesto a Scala mutableMap[String, String].The returned Scala
Map[String, String]is backed by the provided JavaPropertiesand any side-effects of using it via the Scala interface will be visible via the Java interface and vice versa.- p
The Java
Propertiesto be converted.- returns
A Scala mutable
Map[String, String]view of the argument.
- Definition Classes
- AsScalaConverters
-
implicit
def
propertiesAsScalaMapConverter(p: Properties): AsScala[mutable.Map[String, String]]
Adds an
asScalamethod that implicitly converts a JavaPropertiesto a Scala mutableMap[String, String].Adds an
asScalamethod that implicitly converts a JavaPropertiesto a Scala mutableMap[String, String].- Definition Classes
- DecorateAsScala
- See also
-
def
seqAsJavaList[A](s: Seq[A]): java.util.List[A]
Converts a Scala
Seqto a JavaList.Converts a Scala
Seqto a JavaList.The returned Java
Listis backed by the provided ScalaSeqand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Seqwas previously obtained from an implicit or explicit call ofJavaConverters.asScalaBuffer(java.util.List)then the original JavaListwill be returned.- s
The Scala
Seqto be converted.- returns
A Java
Listview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
seqAsJavaListConverter[A](b: Seq[A]): AsJava[java.util.List[A]]
Adds an
asJavamethod that implicitly converts a ScalaSeqto a JavaList.Adds an
asJavamethod that implicitly converts a ScalaSeqto a JavaList.- Definition Classes
- DecorateAsJava
- See also
-
def
setAsJavaSet[A](s: Set[A]): java.util.Set[A]
Converts a Scala
Setto a JavaSet.Converts a Scala
Setto a JavaSet.The returned Java
Setis backed by the provided ScalaSetand any side-effects of using it via the Java interface will be visible via the Scala interface and vice versa.If the Scala
Setwas previously obtained from an implicit or explicit call ofJavaConverters.asScalaSet(java.util.Set)then the original JavaSetwill be returned.- s
The Scala
Setto be converted.- returns
A Java
Setview of the argument.
- Definition Classes
- AsJavaConverters
-
implicit
def
setAsJavaSetConverter[A](s: Set[A]): AsJava[java.util.Set[A]]
Adds an
asJavamethod that implicitly converts a ScalaSetto a JavaSet.Adds an
asJavamethod that implicitly converts a ScalaSetto a JavaSet.- Definition Classes
- DecorateAsJava
- See also
-
final
def
synchronized[T0](arg0: ⇒ T0): T0
- Definition Classes
- AnyRef
-
def
toString(): String
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
- returns
a String representation of the object.
- Definition Classes
- AnyRef → Any
-
final
def
wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
final
def
wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
- final def wait(arg0: Long): Unit
This is the documentation for the Scala standard library.
Package structure
The scala package contains core types like
Int,Float,ArrayorOptionwhich are accessible in all Scala compilation units without explicit qualification or imports.Notable packages include:
scala.collectionand its sub-packages contain Scala's collections frameworkscala.collection.immutable- Immutable, sequential data-structures such asVector,List,Range,HashMaporHashSetscala.collection.mutable- Mutable, sequential data-structures such asArrayBuffer,StringBuilder,HashMaporHashSetscala.collection.concurrent- Mutable, concurrent data-structures such asTrieMapscala.collection.parallel.immutable- Immutable, parallel data-structures such asParVector,ParRange,ParHashMaporParHashSetscala.collection.parallel.mutable- Mutable, parallel data-structures such asParArray,ParHashMap,ParTrieMaporParHashSetscala.concurrent- Primitives for concurrent programming such asFuturesandPromisesscala.io- Input and output operationsscala.math- Basic math functions and additional numeric types likeBigIntandBigDecimalscala.sys- Interaction with other processes and the operating systemscala.util.matching- Regular expressionsOther packages exist. See the complete list on the right.
Additional parts of the standard library are shipped as separate libraries. These include:
scala.reflect- Scala's reflection API (scala-reflect.jar)scala.xml- XML parsing, manipulation, and serialization (scala-xml.jar)scala.swing- A convenient wrapper around Java's GUI framework called Swing (scala-swing.jar)scala.util.parsing- Parser combinators (scala-parser-combinators.jar)Automatic imports
Identifiers in the scala package and the
scala.Predefobject are always in scope by default.Some of these identifiers are type aliases provided as shortcuts to commonly used classes. For example,
Listis an alias forscala.collection.immutable.List.Other aliases refer to classes provided by the underlying platform. For example, on the JVM,
Stringis an alias forjava.lang.String.