How to type cast Any dynamically in scala?

Question

I want to convert "Any" object into an object of runtime type. Based on the class name (string) at the runtime, how do I convert an ANY object to actual object?

I tried using converting class name into class object using Class.forName

val clazz = Class.forName("my.package.Animal")
val any: Any = Animal(1, "simba")
any.asInstanceOf[clazz] // Compilation Error // Looking for a solution

Answer 1

Try to use

• compiler toolbox

   package my.package import scala.tools.reflect.ToolBox import scala.reflect.runtime.universe._ case class Animal(id: Int, name: String) object App { val any: Any = Animal(1, "simba") val className = "my.package.Animal" val mirror = runtimeMirror(getClass.getClassLoader) val tb = mirror.mkToolBox() tb.eval(tb.parse( s""" import my.package.App._ val animal = any.asInstanceOf[$className] println(animal.id) println(animal.name) """)) } 

libraryDependencies += scalaOrganization.value % "scala-reflect" % scalaVersion.value

libraryDependencies += scalaOrganization.value % "scala-compiler" % scalaVersion.value

• or Scala reflection

   import scala.reflect.runtime.universe._ val mirror = runtimeMirror(getClass.getClassLoader) val classSymbol = mirror.staticClass(className) val typ = classSymbol.toType val idMethodSymbol = typ.decl(TermName("id")).asMethod val nameMethodSymbol = typ.decl(TermName("name")).asMethod val instanceMirror = mirror.reflect(any) val idMethodMirror = instanceMirror.reflectMethod(idMethodSymbol) val nameMethodMirror = instanceMirror.reflectMethod(nameMethodSymbol) println(idMethodMirror()) println(nameMethodMirror()) 

libraryDependencies += scalaOrganization.value % "scala-reflect" % scalaVersion.value

• or Java reflection

   val clazz = Class.forName(className) val idMethod = clazz.getMethod("id") val nameMethod = clazz.getMethod("name") println(idMethod.invoke(any)) println(nameMethod.invoke(any))