Scala Standard Library2.12.21 < Back
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# Packages

-  package root

  This is the documentation for the Scala standard library.

  This is the documentation for the Scala standard library.

  #### Package structure

  The scala package contains core types like `Int`, `Float`, `Array` or `Option` 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 framework
    - `scala.collection.immutable` - Immutable, sequential data-structures such as `Vector`, `List`, `Range`, `HashMap` or `HashSet`
    - `scala.collection.mutable` - Mutable, sequential data-structures such as `ArrayBuffer`, `StringBuilder`, `HashMap` or `HashSet`
    - `scala.collection.concurrent` - Mutable, concurrent data-structures such as `TrieMap`
    - `scala.collection.parallel.immutable` - Immutable, parallel data-structures such as `ParVector`, `ParRange`, `ParHashMap` or `ParHashSet`
    - `scala.collection.parallel.mutable` - Mutable, parallel data-structures such as `ParArray`, `ParHashMap`, `ParTrieMap` or `ParHashSet`
  - `scala.concurrent` - Primitives for concurrent programming such as `Futures` and `Promises`
  - `scala.io` - Input and output operations
  - `scala.math` - Basic math functions and additional numeric types like `BigInt` and `BigDecimal`
  - `scala.sys` - Interaction with other processes and the operating system
  - `scala.util.matching` - Regular expressions

  Other 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.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 for `scala.collection.immutable.List`.

  Other aliases refer to classes provided by the underlying platform. For example, on the JVM, `String` is an alias for `java.lang.String`.

  Definition Classes
    root
-  package scala

  Core Scala types.

  Core Scala types. They are always available without an explicit import.

  Definition Classes
    root
-  package collection

  Contains the base traits and objects needed to use and extend Scala's collection library.

  Contains the base traits and objects needed to use and extend Scala's collection library.

  #### Guide

  A detailed guide for using the collections library is available at http://docs.scala-lang.org/overviews/collections/introduction.html. Developers looking to extend the collections library can find a description of its architecture at http://docs.scala-lang.org/overviews/core/architecture-of-scala-collections.html.

  #### Using Collections

  It is convenient to treat all collections as either a scala.collection.Traversable or scala.collection.Iterable, as these traits define the vast majority of operations on a collection.

  Collections can, of course, be treated as specifically as needed, and the library is designed to ensure that the methods that transform collections will return a collection of the same type:

      scala> val array = Array(1,2,3,4,5,6)
      array: Array[Int] = Array(1, 2, 3, 4, 5, 6)

      scala> array map { _.toString }
      res0: Array[String] = Array(1, 2, 3, 4, 5, 6)

      scala> val list = List(1,2,3,4,5,6)
      list: List[Int] = List(1, 2, 3, 4, 5, 6)

      scala> list map { _.toString }
      res1: List[String] = List(1, 2, 3, 4, 5, 6)

  #### Creating Collections

  The most common way to create a collection is to use its companion object as a factory. The three most commonly used collections are scala.collection.Seq, scala.collection.immutable.Set, and scala.collection.immutable.Map. They can be used directly as shown below since their companion objects are all available as type aliases in either the scala package or in `scala.Predef`. New collections are created like this:

      scala> val seq = Seq(1,2,3,4,1)
      seq: Seq[Int] = List(1, 2, 3, 4, 1)

      scala> val set = Set(1,2,3,4,1)
      set: scala.collection.immutable.Set[Int] = Set(1, 2, 3, 4)

      scala> val map = Map(1 -> "one", 2 -> "two", 3 -> "three", 2 -> "too")
      map: scala.collection.immutable.Map[Int,String] = Map(1 -> one, 2 -> too, 3 -> three)

  It is also typical to prefer the scala.collection.immutable collections over those in scala.collection.mutable; the types aliased in the `scala.Predef` object are the immutable versions.

  Also note that the collections library was carefully designed to include several implementations of each of the three basic collection types. These implementations have specific performance characteristics which are described in the guide.

  The concrete parallel collections also have specific performance characteristics which are described in the parallel collections guide

  ##### Converting to and from Java Collections

  The scala.collection.JavaConverters object provides a collection of decorators that allow converting between Scala and Java collections using `asScala` and `asJava` methods.

  Definition Classes
    scala
-  package concurrent
  Definition Classes
    collection
-  package convert
  Definition Classes
    collection
-  package generic
  Definition Classes
    collection
-  package immutable
  Definition Classes
    collection
-  package mutable
  Definition Classes
    collection
-  package parallel

  Package object for parallel collections.

  Package object for parallel collections.

  Definition Classes
    collection
-  package script
  Definition Classes
    collection
- +:
- :+
- AbstractIterable
- AbstractIterator
- AbstractMap
- AbstractSeq
- AbstractSet
- AbstractTraversable
- BitSet
- BitSetLike
- BufferedIterator
- CustomParallelizable
- DefaultMap
- GenIterable
- GenIterableLike
- GenMap
- GenMapLike
- GenSeq
- GenSeqLike
- GenSet
- GenSetLike
- GenTraversable
- GenTraversableLike
- GenTraversableOnce
- IndexedSeq
- IndexedSeqLike
- IndexedSeqOptimized
- Iterable
- IterableLike
- IterableProxy
- IterableProxyLike
- IterableView
- IterableViewLike
- Iterator
- JavaConversions
- JavaConverters
- LinearSeq
- LinearSeqLike
- LinearSeqOptimized
- Map
- MapLike
- MapProxy
- MapProxyLike
- Parallel
- Parallelizable
- Searching
- Seq
- SeqLike
- SeqProxy
- SeqProxyLike
- SeqView
- SeqViewLike
- Set
- SetLike
- SetProxy
- SetProxyLike
- SortedMap
- SortedMapLike
- SortedSet
- SortedSetLike
- Traversable
- TraversableLike
- TraversableOnce
- TraversableProxy
- TraversableProxyLike
- TraversableView
- TraversableViewLike
- ViewMkString

o

scala.collection

# JavaConverters 

###

#### 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

Linear Supertypes
DecorateAsScala, AsScalaConverters, DecorateAsJava, AsJavaConverters, AnyRef, Any
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Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. JavaConverters
2. DecorateAsScala
3. AsScalaConverters
4. DecorateAsJava
5. AsJavaConverters
6. AnyRef
7. Any

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Visibility

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### Value Members

1.  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
2.  final def ##(): Int

   Equivalent to `x.hashCode` except for boxed numeric types and `null`.

   Equivalent to `x.hashCode` except for boxed numeric types and `null`. 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. For `null` returns a hashcode where `null.hashCode` throws a `NullPointerException`.

   returns

     a hash value consistent with ==

   Definition Classes
     AnyRef → Any
3.  final def ==(arg0: Any): Boolean

   The expression `x == that` is equivalent to `if (x eq null) that eq null else x.equals(that)`.

   The expression `x == that` is equivalent to `if (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
4.  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 a `ClassCastException` at runtime, while the expression `List(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 type `T0`.

5.  def asJavaCollection[A](i: Iterable[A]): Collection[A]

   Converts a Scala `Iterable` to an immutable Java `Collection`.

   Converts a Scala `Iterable` to an immutable Java `Collection`.

   If the Scala `Iterable` was previously obtained from an implicit or explicit call of `JavaConverters.collectionAsScalaIterable(java.util.Collection)` then the original Java `Collection` will be returned.

   i

     The Scala `Iterable` to be converted.

   returns

     A Java `Collection` view of the argument.

   Definition Classes
     AsJavaConverters
6.  implicit def asJavaCollectionConverter[A](i: Iterable[A]): AsJavaCollection[A]

   Adds an `asJavaCollection` method that implicitly converts a Scala `Iterable` to an immutable Java `Collection`.

   Adds an `asJavaCollection` method that implicitly converts a Scala `Iterable` to an immutable Java `Collection`.

   Definition Classes
     DecorateAsJava
   See also

     asJavaCollection

7.  def asJavaDictionary[A, B](m: mutable.Map[A, B]): Dictionary[A, B]

   Converts a Scala mutable `Map` to a Java `Dictionary`.

   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 `JavaConverters.dictionaryAsScalaMap(java.util.Dictionary)` then the original Java `Dictionary` will be returned.

   m

     The Scala `Map` to be converted.

   returns

     A Java `Dictionary` view of the argument.

   Definition Classes
     AsJavaConverters
8.  implicit def asJavaDictionaryConverter[A, B](m: mutable.Map[A, B]): AsJavaDictionary[A, B]

   Adds an `asJavaDictionary` method that implicitly converts a Scala mutable `Map` to a Java `Dictionary`.

   Adds an `asJavaDictionary` method that implicitly converts a Scala mutable `Map` to a Java `Dictionary`.

   Definition Classes
     DecorateAsJava
   See also

     asJavaDictionary

9.  def asJavaEnumeration[A](i: Iterator[A]): java.util.Enumeration[A]

   Converts a Scala `Iterator` to a Java `Enumeration`.

   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 `JavaConverters.enumerationAsScalaIterator(java.util.Enumeration)` then the original Java `Enumeration` will be returned.

   i

     The Scala `Iterator` to be converted.

   returns

     A Java `Enumeration` view of the argument.

   Definition Classes
     AsJavaConverters
10.  implicit def asJavaEnumerationConverter[A](i: Iterator[A]): AsJavaEnumeration[A]

    Adds an `asJavaEnumeration` method that implicitly converts a Scala `Iterator` to a Java `Enumeration`.

    Adds an `asJavaEnumeration` method that implicitly converts a Scala `Iterator` to a Java `Enumeration`.

    Definition Classes
      DecorateAsJava
    See also

      asJavaEnumeration

11.  def asJavaIterable[A](i: Iterable[A]): java.lang.Iterable[A]

    Converts a Scala `Iterable` to a Java `Iterable`.

    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 `JavaConverters.iterableAsScalaIterable(java.lang.Iterable)` then the original Java `Iterable` will be returned.

    i

      The Scala `Iterable` to be converted.

    returns

      A Java `Iterable` view of the argument.

    Definition Classes
      AsJavaConverters
12.  implicit def asJavaIterableConverter[A](i: Iterable[A]): AsJava[java.lang.Iterable[A]]

    Adds an `asJava` method that implicitly converts a Scala `Iterable` to a Java `Iterable`.

    Adds an `asJava` method that implicitly converts a Scala `Iterable` to a Java `Iterable`.

    Definition Classes
      DecorateAsJava
    See also

      asJavaIterable

13.  def asJavaIterator[A](i: Iterator[A]): java.util.Iterator[A]

    Converts a Scala `Iterator` to a Java `Iterator`.

    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 `JavaConverters.asScalaIterator(java.util.Iterator)` then the original Java `Iterator` will be returned.

    i

      The Scala `Iterator` to be converted.

    returns

      A Java `Iterator` view of the argument.

    Definition Classes
      AsJavaConverters
14.  implicit def asJavaIteratorConverter[A](i: Iterator[A]): AsJava[java.util.Iterator[A]]

    Adds an `asJava` method that implicitly converts a Scala `Iterator` to a Java `Iterator`.

    Adds an `asJava` method that implicitly converts a Scala `Iterator` to a Java `Iterator`.

    Definition Classes
      DecorateAsJava
    See also

      asJavaIterator

15.  def asScalaBuffer[A](l: java.util.List[A]): Buffer[A]

    Converts a Java `List` to a Scala mutable `Buffer`.

    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 `JavaConverters.bufferAsJavaList(scala.collection.mutable.Buffer)` then the original Scala `Buffer` will be returned.

    l

      The Java `List` to be converted.

    returns

      A Scala mutable `Buffer` view of the argument.

    Definition Classes
      AsScalaConverters
16.  implicit def asScalaBufferConverter[A](l: java.util.List[A]): AsScala[Buffer[A]]

    Adds an `asScala` method that implicitly converts a Java `List` to a Scala mutable `Buffer`.

    Adds an `asScala` method that implicitly converts a Java `List` to a Scala mutable `Buffer`.

    Definition Classes
      DecorateAsScala
    See also

      asScalaBuffer

17.  def asScalaIterator[A](i: java.util.Iterator[A]): Iterator[A]

    Converts a Java `Iterator` to a Scala `Iterator`.

    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 `JavaConverters.asJavaIterator(scala.collection.Iterator)` then the original Scala `Iterator` will be returned.

    i

      The Java `Iterator` to be converted.

    returns

      A Scala `Iterator` view of the argument.

    Definition Classes
      AsScalaConverters
18.  implicit def asScalaIteratorConverter[A](i: java.util.Iterator[A]): AsScala[Iterator[A]]

    Adds an `asScala` method that implicitly converts a Java `Iterator` to a Scala `Iterator`.

    Adds an `asScala` method that implicitly converts a Java `Iterator` to a Scala `Iterator`.

    Definition Classes
      DecorateAsScala
    See also

      asScalaIterator

19.  def asScalaSet[A](s: java.util.Set[A]): mutable.Set[A]

    Converts a Java `Set` to a Scala mutable `Set`.

    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 `JavaConverters.mutableSetAsJavaSet(scala.collection.mutable.Set)` then the original Scala `Set` will be returned.

    s

      The Java `Set` to be converted.

    returns

      A Scala mutable `Set` view of the argument.

    Definition Classes
      AsScalaConverters
20.  implicit def asScalaSetConverter[A](s: java.util.Set[A]): AsScala[mutable.Set[A]]

    Adds an `asScala` method that implicitly converts a Java `Set` to a Scala mutable `Set`.

    Adds an `asScala` method that implicitly converts a Java `Set` to a Scala mutable `Set`.

    Definition Classes
      DecorateAsScala
    See also

      asScalaSet

21.  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 of `JavaConverters.asScalaBuffer(java.util.List)` then the original Java `List` will be returned.

    b

      The Scala `Buffer` to be converted.

    returns

      A Java `List` view of the argument.

    Definition Classes
      AsJavaConverters
22.  implicit def bufferAsJavaListConverter[A](b: Buffer[A]): AsJava[java.util.List[A]]

    Adds an `asJava` method that implicitly converts a Scala mutable `Buffer` to a Java `List`.

    Adds an `asJava` method that implicitly converts a Scala mutable `Buffer` to a Java `List`.

    Definition Classes
      DecorateAsJava
    See also

      bufferAsJavaList

23.  def clone(): AnyRef

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the `clone` method is platform dependent.

    returns

      a copy of the receiver object.

    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()
    Note

      not specified by SLS as a member of AnyRef

24.  def collectionAsScalaIterable[A](i: Collection[A]): Iterable[A]

    Converts a Java `Collection` to an Scala `Iterable`.

    Converts a Java `Collection` to an Scala `Iterable`.

    If the Java `Collection` was previously obtained from an implicit or explicit call of `JavaConverters.asJavaCollection(scala.collection.Iterable)` then the original Scala `Iterable` will be returned.

    i

      The Java `Collection` to be converted.

    returns

      A Scala `Iterable` view of the argument.

    Definition Classes
      AsScalaConverters
25.  implicit def collectionAsScalaIterableConverter[A](i: Collection[A]): AsScala[Iterable[A]]

    Adds an `asScala` method that implicitly converts a Java `Collection` to an Scala `Iterable`.

    Adds an `asScala` method that implicitly converts a Java `Collection` to an Scala `Iterable`.

    Definition Classes
      DecorateAsScala
    See also

      collectionAsScalaIterable

26.  def dictionaryAsScalaMap[A, B](p: Dictionary[A, B]): mutable.Map[A, B]

    Converts a Java `Dictionary` to a Scala mutable `Map`.

    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.

    If the Java `Dictionary` was previously obtained from an implicit or explicit call of `JavaConverters.asJavaDictionary(scala.collection.mutable.Map)` then the original Scala `Map` will be returned.

    p

      The Java `Dictionary` to be converted.

    returns

      A Scala mutable `Map` view of the argument.

    Definition Classes
      AsScalaConverters
27.  implicit def dictionaryAsScalaMapConverter[A, B](p: Dictionary[A, B]): AsScala[mutable.Map[A, B]]

    Adds an `asScala` method that implicitly converts a Java `Dictionary` to a Scala mutable `Map`.

    Adds an `asScala` method that implicitly converts a Java `Dictionary` to a Scala mutable `Map`.

    Definition Classes
      DecorateAsScala
    See also

      dictionaryAsScalaMap

28.  def enumerationAsScalaIterator[A](i: java.util.Enumeration[A]): Iterator[A]

    Converts a Java `Enumeration` to a Scala `Iterator`.

    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 `JavaConverters.asJavaEnumeration(scala.collection.Iterator)` then the original Scala `Iterator` will be returned.

    i

      The Java `Enumeration` to be converted.

    returns

      A Scala `Iterator` view of the argument.

    Definition Classes
      AsScalaConverters
29.  implicit def enumerationAsScalaIteratorConverter[A](i: java.util.Enumeration[A]): AsScala[Iterator[A]]

    Adds an `asScala` method that implicitly converts a Java `Enumeration` to a Scala `Iterator`.

    Adds an `asScala` method that implicitly converts a Java `Enumeration` to a Scala `Iterator`.

    Definition Classes
      DecorateAsScala
    See also

      enumerationAsScalaIterator

30.  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 of `AnyRef`, and has three additional properties:

    - It is consistent: for any non-null instances `x` and `y` of type `AnyRef`, multiple invocations of `x.eq(y)` consistently returns `true` or consistently returns `false`.
    - For any non-null instance `x` of type `AnyRef`, `x.eq(null)` and `null.eq(x)` returns `false`.
    - `null.eq(null)` returns `true`.

    When overriding the `equals` or `hashCode` 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
31.  def equals(arg0: Any): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to `eq`.

    See also `equals` in scala.Any.

    returns

      `true` if the receiver object is equivalent to the argument; `false` otherwise.

    Definition Classes
      AnyRef → Any
32.  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 between `finalize` and non-local returns and exceptions, are all platform dependent.

    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws( classOf[java.lang.Throwable] )
    Note

      not specified by SLS as a member of AnyRef

33.  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
    Annotations
      @native()
34.  def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

      the hash code value for this object.

    Definition Classes
      AnyRef → Any
    Annotations
      @native()
35.  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 return `false`, while the expression `List(1).isInstanceOf[List[String]]` will return `true`. 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 type `T0`; `false` otherwise.

    Definition Classes
      Any
36.  def iterableAsScalaIterable[A](i: java.lang.Iterable[A]): Iterable[A]

    Converts a Java `Iterable` to a Scala `Iterable`.

    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 `JavaConverters.asJavaIterable(scala.collection.Iterable) then the original Scala `Iterable` will be returned.`

    i

      The Java `Iterable` to be converted.

    returns

      A Scala `Iterable` view of the argument.

    Definition Classes
      AsScalaConverters
37.  implicit def iterableAsScalaIterableConverter[A](i: java.lang.Iterable[A]): AsScala[Iterable[A]]

    Adds an `asScala` method that implicitly converts a Java `Iterable` to a Scala `Iterable`.

    Adds an `asScala` method that implicitly converts a Java `Iterable` to a Scala `Iterable`.

    Definition Classes
      DecorateAsScala
    See also

      iterableAsScalaIterable

38.  def mapAsJavaConcurrentMap[A, B](m: concurrent.Map[A, B]): ConcurrentMap[A, B]

    Converts a Scala mutable `concurrent.Map` to a Java `ConcurrentMap`.

    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 `JavaConverters.mapAsScalaConcurrentMap(java.util.concurrent.ConcurrentMap)` then the original Java `ConcurrentMap` will be returned.

    m

      The Scala `concurrent.Map` to be converted.

    returns

      A Java `ConcurrentMap` view of the argument.

    Definition Classes
      AsJavaConverters
39.  implicit def mapAsJavaConcurrentMapConverter[A, B](m: concurrent.Map[A, B]): AsJava[ConcurrentMap[A, B]]

    Adds an `asJava` method that implicitly converts a Scala mutable `concurrent.Map` to a Java `ConcurrentMap`.

    Adds an `asJava` method that implicitly converts a Scala mutable `concurrent.Map` to a Java `ConcurrentMap`.

    Definition Classes
      DecorateAsJava
    See also

      mapAsJavaConcurrentMap.

40.  def mapAsJavaMap[A, B](m: Map[A, B]): java.util.Map[A, B]

    Converts a Scala `Map` to a Java `Map`.

    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 `JavaConverters.mapAsScalaMap(java.util.Map)` then the original Java `Map` will be returned.

    m

      The Scala `Map` to be converted.

    returns

      A Java `Map` view of the argument.

    Definition Classes
      AsJavaConverters
41.  implicit def mapAsJavaMapConverter[A, B](m: Map[A, B]): AsJava[java.util.Map[A, B]]

    Adds an `asJava` method that implicitly converts a Scala `Map` to a Java `Map`.

    Adds an `asJava` method that implicitly converts a Scala `Map` to a Java `Map`.

    Definition Classes
      DecorateAsJava
    See also

      mapAsJavaMap

42.  def mapAsScalaConcurrentMap[A, B](m: ConcurrentMap[A, B]): concurrent.Map[A, B]

    Converts a Java `ConcurrentMap` to a Scala mutable `ConcurrentMap`.

    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 `JavaConverters.mapAsJavaConcurrentMap(scala.collection.mutable.ConcurrentMap)` then the original Scala `ConcurrentMap` will be returned.

    m

      The Java `ConcurrentMap` to be converted.

    returns

      A Scala mutable `ConcurrentMap` view of the argument.

    Definition Classes
      AsScalaConverters
43.  implicit def mapAsScalaConcurrentMapConverter[A, B](m: ConcurrentMap[A, B]): AsScala[concurrent.Map[A, B]]

    Adds an `asScala` method that implicitly converts a Java `ConcurrentMap` to a Scala mutable `concurrent.Map`.

    Adds an `asScala` method that implicitly converts a Java `ConcurrentMap` to a Scala mutable `concurrent.Map`.

    Definition Classes
      DecorateAsScala
    See also

      mapAsScalaConcurrentMap

44.  def mapAsScalaMap[A, B](m: java.util.Map[A, B]): mutable.Map[A, B]

    Converts a Java `Map` to a Scala mutable `Map`.

    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 `JavaConverters.mutableMapAsJavaMap(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 Java `Map` to be converted.

    returns

      A Scala mutable `Map` view of the argument.

    Definition Classes
      AsScalaConverters
45.  implicit def mapAsScalaMapConverter[A, B](m: java.util.Map[A, B]): AsScala[mutable.Map[A, B]]

    Adds an `asScala` method that implicitly converts a Java `Map` to a Scala mutable `Map`.

    Adds an `asScala` method that implicitly converts a Java `Map` to a Scala mutable `Map`.

    Definition Classes
      DecorateAsScala
    See also

      mapAsScalaMap

46.  def mutableMapAsJavaMap[A, B](m: mutable.Map[A, B]): java.util.Map[A, B]

    Converts a Scala mutable `Map` to a Java `Map`.

    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 `JavaConverters.mapAsScalaMap(java.util.Map)` then the original Java `Map` will be returned.

    m

      The Scala mutable `Map` to be converted.

    returns

      A Java `Map` view of the argument.

    Definition Classes
      AsJavaConverters
47.  implicit def mutableMapAsJavaMapConverter[A, B](m: mutable.Map[A, B]): AsJava[java.util.Map[A, B]]

    Adds an `asJava` method that implicitly converts a Scala mutable `Map` to a Java `Map`.

    Adds an `asJava` method that implicitly converts a Scala mutable `Map` to a Java `Map`.

    Definition Classes
      DecorateAsJava
    See also

      mutableMapAsJavaMap

48.  def mutableSeqAsJavaList[A](s: mutable.Seq[A]): java.util.List[A]

    Converts a Scala mutable `Seq` to a Java `List`.

    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 `JavaConverters.asScalaBuffer(java.util.List)` then the original Java `List` will be returned.

    s

      The Scala `Seq` to be converted.

    returns

      A Java `List` view of the argument.

    Definition Classes
      AsJavaConverters
49.  implicit def mutableSeqAsJavaListConverter[A](b: mutable.Seq[A]): AsJava[java.util.List[A]]

    Adds an `asJava` method that implicitly converts a Scala mutable `Seq` to a Java `List`.

    Adds an `asJava` method that implicitly converts a Scala mutable `Seq` to a Java `List`.

    Definition Classes
      DecorateAsJava
    See also

      mutableSeqAsJavaList

50.  def mutableSetAsJavaSet[A](s: mutable.Set[A]): java.util.Set[A]

    Converts a Scala mutable `Set` to a Java `Set`.

    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 `JavaConverters.asScalaSet(java.util.Set)` then the original Java `Set` will be returned.

    s

      The Scala mutable `Set` to be converted.

    returns

      A Java `Set` view of the argument.

    Definition Classes
      AsJavaConverters
51.  implicit def mutableSetAsJavaSetConverter[A](s: mutable.Set[A]): AsJava[java.util.Set[A]]

    Adds an `asJava` method that implicitly converts a Scala mutable `Set` to a Java `Set`.

    Adds an `asJava` method that implicitly converts a Scala mutable `Set` to a Java `Set`.

    Definition Classes
      DecorateAsJava
    See also

      mutableSetAsJavaSet

52.  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
53.  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

54.  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

55.  def propertiesAsScalaMap(p: Properties): mutable.Map[String, String]

    Converts a Java `Properties` to a Scala mutable `Map[String, String]`.

    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 Java `Properties` to be converted.

    returns

      A Scala mutable `Map[String, String]` view of the argument.

    Definition Classes
      AsScalaConverters
56.  implicit def propertiesAsScalaMapConverter(p: Properties): AsScala[mutable.Map[String, String]]

    Adds an `asScala` method that implicitly converts a Java `Properties` to a Scala mutable `Map[String, String]`.

    Adds an `asScala` method that implicitly converts a Java `Properties` to a Scala mutable `Map[String, String]`.

    Definition Classes
      DecorateAsScala
    See also

      propertiesAsScalaMap

57.  def seqAsJavaList[A](s: Seq[A]): java.util.List[A]

    Converts a Scala `Seq` to a Java `List`.

    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 `JavaConverters.asScalaBuffer(java.util.List)` then the original Java `List` will be returned.

    s

      The Scala `Seq` to be converted.

    returns

      A Java `List` view of the argument.

    Definition Classes
      AsJavaConverters
58.  implicit def seqAsJavaListConverter[A](b: Seq[A]): AsJava[java.util.List[A]]

    Adds an `asJava` method that implicitly converts a Scala `Seq` to a Java `List`.

    Adds an `asJava` method that implicitly converts a Scala `Seq` to a Java `List`.

    Definition Classes
      DecorateAsJava
    See also

      seqAsJavaList

59.  def setAsJavaSet[A](s: Set[A]): java.util.Set[A]

    Converts a Scala `Set` to a Java `Set`.

    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 `JavaConverters.asScalaSet(java.util.Set)` then the original Java `Set` will be returned.

    s

      The Scala `Set` to be converted.

    returns

      A Java `Set` view of the argument.

    Definition Classes
      AsJavaConverters
60.  implicit def setAsJavaSetConverter[A](s: Set[A]): AsJava[java.util.Set[A]]

    Adds an `asJava` method that implicitly converts a Scala `Set` to a Java `Set`.

    Adds an `asJava` method that implicitly converts a Scala `Set` to a Java `Set`.

    Definition Classes
      DecorateAsJava
    See also

      setAsJavaSet

61.  final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
      AnyRef
62.  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
63.  final def wait(): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
64.  final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... )
65.  final def wait(arg0: Long): Unit
    Definition Classes
      AnyRef
    Annotations
      @throws( ... ) @native()

### Inherited from DecorateAsScala

### Inherited from AsScalaConverters

### Inherited from DecorateAsJava

### Inherited from AsJavaConverters

### Inherited from AnyRef

### Inherited from Any

### Ungrouped