Value Members

1.  object CollectionConverters extends AsJavaConverters with AsScalaConverters

   This object contains methods that convert between Scala and Java collections.

   This object contains methods that convert between Scala and Java collections.

   The explicit conversion methods defined here are intended to be used in Java code. For Scala code, it is recommended to use the extension methods defined in scala.jdk.CollectionConverters.

   Note: to create Java Streams that operate on Scala collections (sequentially or in parallel), use StreamConverters.

   // Java Code
   import scala.jdk.javaapi.CollectionConverters;
   public class A {
     public void t(scala.collection.immutable.List<String> l) {
       java.util.List<String> jl = CollectionConverters.asJava(l);
     }
   }

   The conversions return adapters for the corresponding API, i.e., the collections are wrapped, not converted. Changes to the original collection are reflected in the view, and vice versa.

   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 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.

2.  object DurationConverters

   This object contains methods that convert between Scala and Java duration types.

   This object contains methods that convert between Scala and Java duration types.

   The explicit conversion methods defined here are intended to be used in Java code. For Scala code, it is recommended to use the extension methods defined in scala.jdk.DurationConverters.

3.  object FunctionConverters

   This object contains methods that convert between Scala and Java function types.

   This object contains methods that convert between Scala and Java function types.

   The explicit conversion methods defined here are intended to be used in Java code. For Scala code, it is recommended to use the extension methods defined in scala.jdk.FunctionConverters.

   For details how the function converters work, see scala.jdk.FunctionConverters.

4.  object FutureConverters

   This object contains methods that convert between Scala Future and Java CompletionStage.

   This object contains methods that convert between Scala Future and Java CompletionStage.

   The explicit conversion methods defined here are intended to be used in Java code. For Scala code, it is recommended to use the extension methods defined in scala.jdk.FutureConverters.

   Note that the bridge is implemented at the read-only side of asynchronous handles, namely Future (instead of scala.concurrent.Promise) and CompletionStage (instead of java.util.concurrent.CompletableFuture). This is intentional, as the semantics of bridging the write-handles would be prone to race conditions; if both ends (CompletableFuture and Promise) are completed independently at the same time, they may contain different values afterwards. For this reason, toCompletableFuture is not supported on the created CompletionStages.

5.  object OptionConverters

   This object contains methods that convert between Scala Option and Java Optional types.

   This object contains methods that convert between Scala Option and Java Optional types.

   The explicit conversion methods defined here are intended to be used in Java code. For Scala code, it is recommended to use the extension methods defined in scala.jdk.OptionConverters.

6.  object StreamConverters

   This object contains methods to create Java Streams that operate on Scala collections (sequentially or in parallel).

   This object contains methods to create Java Streams that operate on Scala collections (sequentially or in parallel). For more information on Java streams, consult the documentation (https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html).

   The explicit conversion methods defined here are intended to be used in Java code. For Scala code, it is recommended to use the extension methods defined in scala.jdk.StreamConverters.

   Note: to convert between Scala collections and classic Java collections, use CollectionConverters.

   For details how the stream converters work, see scala.jdk.StreamConverters.