Just another update

Task/Send-an-unknown-method-call/J/send-an-unknown-method-call.j

@@ -0,0 +1,21 @@
+   sum =: +/
+   prod =: */
+   count =: #
+
+   nameToDispatch =: 'sum'    NB. pick a name already defined
+
+   ". nameToDispatch,' 1 2 3'
+6
+   nameToDispatch~ 1 2 3
+6
+   nameToDispatch (128!:2) 1 2 3
+6
+
+   nameToDispatch =: 'count'  NB. pick another name
+
+   ". nameToDispatch,' 1 2 3'
+3
+   nameToDispatch~ 1 2 3
+3
+   nameToDispatch (128!:2) 1 2 3
+3

Task/Send-an-unknown-method-call/Mathematica/send-an-unknown-method-call.math

@@ -0,0 +1 @@
+ToExpression[Input["function? E.g. Sin",]][Input["value? E.g. 0.4123"]]

Task/Send-an-unknown-method-call/Scala/send-an-unknown-method-call.scala

@@ -0,0 +1,12 @@
+class Example {
+  def foo(x: Int): Int = 42 + x
+}
+
+object Main extends App {
+  val example = new Example
+
+  val meth = example.getClass.getMethod("foo", classOf[Int])
+
+  assert(meth.invoke(example, 5.asInstanceOf[AnyRef]) == 47.asInstanceOf[AnyRef], "Not confirm expectation.")
+  println(s"Successfully completed without errors. [total ${scala.compat.Platform.currentTime - executionStart} ms]")
+}