trait AsJavaConverters extends AnyRef
Defines converter methods from Scala to Java collections.
- Source
- AsJavaConverters.scala
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- by ArrowAssoc
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Value Members
-
final
def
!=(arg0: Any): Boolean
Test two objects for inequality.
Test two objects for inequality.
- returns
true
if !(this == that), false otherwise.
- Definition Classes
- AnyRef → Any
-
final
def
##(): Int
Equivalent to
x.hashCode
except for boxed numeric types andnull
.Equivalent to
x.hashCode
except 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. Fornull
returns a hashcode wherenull.hashCode
throws aNullPointerException
.- returns
a hash value consistent with ==
- Definition Classes
- AnyRef → Any
-
def
+(other: String): String
- Implicit
- This member is added by an implicit conversion from AsJavaConverters to any2stringadd[AsJavaConverters] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
-
def
->[B](y: B): (AsJavaConverters, B)
- Implicit
- This member is added by an implicit conversion from AsJavaConverters to ArrowAssoc[AsJavaConverters] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
-
final
def
==(arg0: Any): Boolean
The expression
x == that
is equivalent toif (x eq null) that eq null else x.equals(that)
.The expression
x == that
is equivalent toif (x eq null) that eq null else x.equals(that)
.- returns
true
if the receiver object is equivalent to the argument;false
otherwise.
- 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 aClassCastException
at 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
ClassCastException
if the receiver object is not an instance of the erasure of typeT0
.
-
def
asJavaCollection[A](i: Iterable[A]): Collection[A]
Converts a Scala
Iterable
to an immutable JavaCollection
.Converts a Scala
Iterable
to an immutable JavaCollection
.If the Scala
Iterable
was previously obtained from an implicit or explicit call ofJavaConverters.collectionAsScalaIterable(java.util.Collection)
then the original JavaCollection
will be returned.- i
The Scala
Iterable
to be converted.- returns
A Java
Collection
view of the argument.
-
def
asJavaDictionary[A, B](m: mutable.Map[A, B]): Dictionary[A, B]
Converts a Scala mutable
Map
to a JavaDictionary
.Converts a Scala mutable
Map
to a JavaDictionary
.The returned Java
Dictionary
is backed by the provided ScalaDictionary
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 ofJavaConverters.dictionaryAsScalaMap(java.util.Dictionary)
then the original JavaDictionary
will be returned.- m
The Scala
Map
to be converted.- returns
A Java
Dictionary
view of the argument.
-
def
asJavaEnumeration[A](i: Iterator[A]): java.util.Enumeration[A]
Converts a Scala
Iterator
to a JavaEnumeration
.Converts a Scala
Iterator
to a JavaEnumeration
.The returned Java
Enumeration
is backed by the provided ScalaIterator
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 ofJavaConverters.enumerationAsScalaIterator(java.util.Enumeration)
then the original JavaEnumeration
will be returned.- i
The Scala
Iterator
to be converted.- returns
A Java
Enumeration
view of the argument.
-
def
asJavaIterable[A](i: Iterable[A]): java.lang.Iterable[A]
Converts a Scala
Iterable
to a JavaIterable
.Converts a Scala
Iterable
to a JavaIterable
.The returned Java
Iterable
is backed by the provided ScalaIterable
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 ofJavaConverters.iterableAsScalaIterable(java.lang.Iterable)
then the original JavaIterable
will be returned.- i
The Scala
Iterable
to be converted.- returns
A Java
Iterable
view of the argument.
-
def
asJavaIterator[A](i: Iterator[A]): java.util.Iterator[A]
Converts a Scala
Iterator
to a JavaIterator
.Converts a Scala
Iterator
to a JavaIterator
.The returned Java
Iterator
is backed by the provided ScalaIterator
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 ofJavaConverters.asScalaIterator(java.util.Iterator)
then the original JavaIterator
will be returned.- i
The Scala
Iterator
to be converted.- returns
A Java
Iterator
view of the argument.
-
def
bufferAsJavaList[A](b: Buffer[A]): java.util.List[A]
Converts a Scala mutable
Buffer
to a Java List.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 ofJavaConverters.asScalaBuffer(java.util.List)
then the original JavaList
will be returned.- b
The Scala
Buffer
to be converted.- returns
A Java
List
view of the argument.
-
def
clone(): AnyRef
Create a copy of the receiver object.
-
def
ensuring(cond: (AsJavaConverters) ⇒ Boolean, msg: ⇒ Any): AsJavaConverters
- Implicit
- This member is added by an implicit conversion from AsJavaConverters to Ensuring[AsJavaConverters] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: (AsJavaConverters) ⇒ Boolean): AsJavaConverters
- Implicit
- This member is added by an implicit conversion from AsJavaConverters to Ensuring[AsJavaConverters] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean, msg: ⇒ Any): AsJavaConverters
- Implicit
- This member is added by an implicit conversion from AsJavaConverters to Ensuring[AsJavaConverters] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean): AsJavaConverters
- Implicit
- This member is added by an implicit conversion from AsJavaConverters to Ensuring[AsJavaConverters] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
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
eq
method implements an equivalence relation on non-null instances ofAnyRef
, and has three additional properties:- It is consistent: for any non-null instances
x
andy
of typeAnyRef
, multiple invocations ofx.eq(y)
consistently returnstrue
or consistently returnsfalse
. - For any non-null instance
x
of typeAnyRef
,x.eq(null)
andnull.eq(x)
returnsfalse
. null.eq(null)
returnstrue
.
When overriding the
equals
orhashCode
methods, 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
true
if the argument is a reference to the receiver object;false
otherwise.
- 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
finalize
method is invoked, as well as the interaction betweenfinalize
and non-local returns and exceptions, are all platform dependent. -
def
formatted(fmtstr: String): String
Returns string formatted according to given
format
string.Returns string formatted according to given
format
string. Format strings are as forString.format
(@see java.lang.String.format).- Implicit
- This member is added by an implicit conversion from AsJavaConverters to StringFormat[AsJavaConverters] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
-
final
def
getClass(): Class[_]
Returns the runtime class representation of the object.
Returns the runtime class representation of the object.
- returns
a class object corresponding to the runtime type of the receiver.
- Definition Classes
- AnyRef → Any
-
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
true
if the receiver object is an instance of erasure of typeT0
;false
otherwise.
- Definition Classes
- Any
-
def
mapAsJavaConcurrentMap[A, B](m: concurrent.Map[A, B]): ConcurrentMap[A, B]
Converts a Scala mutable
concurrent.Map
to a JavaConcurrentMap
.Converts a Scala mutable
concurrent.Map
to a JavaConcurrentMap
.The returned Java
ConcurrentMap
is backed by the provided Scalaconcurrent.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 ofJavaConverters.mapAsScalaConcurrentMap(java.util.concurrent.ConcurrentMap)
then the original JavaConcurrentMap
will be returned.- m
The Scala
concurrent.Map
to be converted.- returns
A Java
ConcurrentMap
view of the argument.
-
def
mapAsJavaMap[A, B](m: Map[A, B]): java.util.Map[A, B]
Converts a Scala
Map
to a JavaMap
.Converts a Scala
Map
to a JavaMap
.The returned Java
Map
is backed by the provided ScalaMap
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 ofJavaConverters.mapAsScalaMap(java.util.Map)
then the original JavaMap
will be returned.- m
The Scala
Map
to be converted.- returns
A Java
Map
view of the argument.
-
def
mutableMapAsJavaMap[A, B](m: mutable.Map[A, B]): java.util.Map[A, B]
Converts a Scala mutable
Map
to a JavaMap
.Converts a Scala mutable
Map
to a JavaMap
.The returned Java
Map
is backed by the provided ScalaMap
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 ofJavaConverters.mapAsScalaMap(java.util.Map)
then the original JavaMap
will be returned.- m
The Scala mutable
Map
to be converted.- returns
A Java
Map
view of the argument.
-
def
mutableSeqAsJavaList[A](s: mutable.Seq[A]): java.util.List[A]
Converts a Scala mutable
Seq
to a JavaList
.Converts a Scala mutable
Seq
to a JavaList
.The returned Java
List
is backed by the provided ScalaSeq
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 ofJavaConverters.asScalaBuffer(java.util.List)
then the original JavaList
will be returned.- s
The Scala
Seq
to be converted.- returns
A Java
List
view of the argument.
-
def
mutableSetAsJavaSet[A](s: mutable.Set[A]): java.util.Set[A]
Converts a Scala mutable
Set
to a JavaSet
.Converts a Scala mutable
Set
to a JavaSet
.The returned Java
Set
is backed by the provided ScalaSet
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 ofJavaConverters.asScalaSet(java.util.Set)
then the original JavaSet
will be returned.- s
The Scala mutable
Set
to be converted.- returns
A Java
Set
view of the argument.
-
final
def
ne(arg0: AnyRef): Boolean
Equivalent to
!(this eq that)
.Equivalent to
!(this eq that)
.- returns
true
if the argument is not a reference to the receiver object;false
otherwise.
- 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
- 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
- Note
not specified by SLS as a member of AnyRef
-
def
seqAsJavaList[A](s: Seq[A]): java.util.List[A]
Converts a Scala
Seq
to a JavaList
.Converts a Scala
Seq
to a JavaList
.The returned Java
List
is backed by the provided ScalaSeq
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 ofJavaConverters.asScalaBuffer(java.util.List)
then the original JavaList
will be returned.- s
The Scala
Seq
to be converted.- returns
A Java
List
view of the argument.
-
def
setAsJavaSet[A](s: Set[A]): java.util.Set[A]
Converts a Scala
Set
to a JavaSet
.Converts a Scala
Set
to a JavaSet
.The returned Java
Set
is backed by the provided ScalaSet
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 ofJavaConverters.asScalaSet(java.util.Set)
then the original JavaSet
will be returned.- s
The Scala
Set
to be converted.- returns
A Java
Set
view of the argument.
-
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
- Definition Classes
- AnyRef
- Annotations
- @throws( ... )
-
def
→[B](y: B): (AsJavaConverters, B)
- Implicit
- This member is added by an implicit conversion from AsJavaConverters to ArrowAssoc[AsJavaConverters] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
This is the documentation for the Scala standard library.
Package structure
The scala package contains core types like
Int
,Float
,Array
orOption
which are accessible in all Scala compilation units without explicit qualification or imports.Notable packages include:
scala.collection
and its sub-packages contain Scala's collections frameworkscala.collection.immutable
- Immutable, sequential data-structures such asVector
,List
,Range
,HashMap
orHashSet
scala.collection.mutable
- Mutable, sequential data-structures such asArrayBuffer
,StringBuilder
,HashMap
orHashSet
scala.collection.concurrent
- Mutable, concurrent data-structures such asTrieMap
scala.collection.parallel.immutable
- Immutable, parallel data-structures such asParVector
,ParRange
,ParHashMap
orParHashSet
scala.collection.parallel.mutable
- Mutable, parallel data-structures such asParArray
,ParHashMap
,ParTrieMap
orParHashSet
scala.concurrent
- Primitives for concurrent programming such asFutures
andPromises
scala.io
- Input and output operationsscala.math
- Basic math functions and additional numeric types likeBigInt
andBigDecimal
scala.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, including an example implementation of a JSON parser (scala-parser-combinators.jar)Automatic imports
Identifiers in the scala package and the
scala.Predef
object are always in scope by default.Some of these identifiers are type aliases provided as shortcuts to commonly used classes. For example,
List
is an alias forscala.collection.immutable.List
.Other aliases refer to classes provided by the underlying platform. For example, on the JVM,
String
is an alias forjava.lang.String
.