package convert
- Alphabetic
- By Inheritance
- convert
- AnyRef
- Any
- Hide All
- Show All
- Public
- All
Type Members
-
trait
DecorateAsJava
extends AnyRef
A collection of decorators that allow converting between Scala and Java collections using
asScala
andasJava
methods.A collection of decorators that allow converting between Scala and Java collections using
asScala
andasJava
methods.The following conversions are supported via
asJava
,asScala
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.mutable.concurrent.Map <=> java.util.concurrent.ConcurrentMap
In all cases, converting from a source type to a target type and back again will return the original source object, e.g.
import scala.collection.JavaConverters._ val sl = new scala.collection.mutable.ListBuffer[Int] val jl : java.util.List[Int] = sl.asJava val sl2 : scala.collection.mutable.Buffer[Int] = jl.asScala assert(sl eq sl2)
The following conversions are also supported, but the direction from Scala to Java is done by the more specifically named methods:
asJavaCollection
,asJavaEnumeration
,asJavaDictionary
.scala.collection.Iterable <=> java.util.Collection scala.collection.Iterator <=> java.util.Enumeration scala.collection.mutable.Map <=> java.util.Dictionary
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
- Since
2.8.1
- trait DecorateAsScala extends AnyRef
- trait WrapAsJava extends AnyRef
- trait WrapAsScala extends AnyRef
Value Members
- val decorateAll: DecorateAsJava with DecorateAsScala
- val decorateAsJava: DecorateAsJava
- val decorateAsScala: DecorateAsScala
- val wrapAll: WrapAsJava with WrapAsScala
- val wrapAsJava: WrapAsJava
- val wrapAsScala: WrapAsScala
- object WrapAsJava extends WrapAsJava
- object WrapAsScala extends WrapAsScala
-
object
Wrappers
extends Wrappers with Serializable
- Annotations
- @SerialVersionUID()
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 left.
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
.