javaSet.toString Example to Convert Java Set to String importscala.jdk.CollectionConverters._objectmyObject{defmain(args:Array[String]):Unit={valjavaSet=newjava.util.HashSet[Int]()javaSet.add(4535)javaSet.add(2
Here’s a quick look at how to convert a Java Map (such asHashMap) to a ScalaMapusing theJavaConvertersobject: // import what you needimportjava.util._importscala.collection.JavaConverters._// create and populate a java mapvaljMap=newHashMap[String,String]()jMap.put("first_name","Alvin...
If you attempt to insert the price field into MySQL without first converting the object from a Scala BigDecimal to a Java BigDecimal, you’ll get an exception that looks like this:[error] play - Cannot invoke the action, eventually got an error: java.lang.ClassCastException: scala.math....
(byteArray.map(_.toChar)).mkString Scala code to convert byte array to String using mkString method// Program to convert Byte Array to String object MyObject { def main(args: Array[String]) { val byteArray = Array[Byte](73, 110, 99, 108, 117, 100, 101, 104, 101, 108, 112) ...
if (o != null) return JavaConverters.mapAsScalaMapConverter(o).asScala().toMap(Predef.<Tuple2<String, Object>>conforms());
Unfortunately, we can’t create a ZonedDateTime object directly from milliseconds, so we first need to create an Instant object:scala> val instant = Instant.ofEpochMilli(millis) instant: java.time.Instant = 2023-10-20T15:09:36.315ZCopy...
CHAPTER 23 Convert Your Codebase At this point, you're likely to have an existing Java codebase and may be wondering if you should try and convert the Java to Scala. It may be a lot of effort, but I say it's definitely worth investing in converting the entire codebase to Scala if ...
java.lang.NoClassDefFoundError: scala/convert/convert/DecorateAsScala，但pom.xml中的scala-library将...
import scala.util.{Try, Success, Failure} object MyClass { def makeInt(str: String): Try[Int] = Try(str.trim.toInt) def main(args: Array[String]) { val str = "scala" val number = makeInt(str) println(number) } } Producción : Failure (java.lang.NumberFormatException: For input...
Gson's main focus is on Java. Using it with other JVM languages such as Kotlin or Scala might work fine in many cases, but language-specific features such as Kotlin's non-nulltypes or constructors with default arguments are not supported. This can lead to confusing and incorrect behavior....