Scala's interoperability with Java

Java is used in conjunction with Scala:

The list of Java and the conversion of the Scala buffer:

The premise is that the converted Java type and Scala type must also be import, then import Scala.collection.javaconversions._, and the set of conversions must have a definite type

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Import Scala.collection.javaConversions.bufferAsJavaList

Val javalist = new Processbuilder (ArrayBuffer (1))//It will return a Javalist object

Import Scala.collection.mutable.ArrayBuffer

Val Buff:buffer[int] = new Java.util.arraylist[int] ()//It will automatically turn into Buffer

Import Scala.collection.javaConversions.mapAsScalaMap

Val scalamap = new Java.util.treemap[string,int]//It will automatically turn into a map in Scala

Import Scala.collection.JavaConversions.propertiesAsScalaMap

Val scalamap = system.getproperties ()//It will automatically turn into a map in Scala

Import Scala.collection.javaConversions.mapAsJavaMap

Import Java.awt.font.textattribute._//Introduce the key that will be used in the map below

Val Font = new Java.awt.Font (Map ("1" and 1, "2", 2))//The method expects a Java mapping

Scala's interoperability with Java