How to learn about using scala.None from Java using javap?

Question

In a previous question, Accessing scala.None from Java, it seems that people had used javap to figure out how to access scala.None from Java.

Answer 1

I'm not competing with the other answer, but since people seem often not to notice this, you can do this in the repl.

scala> :paste
// Entering paste mode (ctrl-D to finish)

object OptionTest extends App {
  val x = scala.None
  val y = scala.Some("asdf")
}

// Exiting paste mode, now interpreting.

defined module OptionTest

scala> :javap -v OptionTest$
Compiled from ""
public final class OptionTest$ extends java.lang.Object implements scala.App,scala.ScalaObject
  SourceFile: ""
  Scala: length = 0x

  [lots of output etc]   

  public scala.None$ x();
    Code:
     Stack=1, Locals=1, Args_size=1
     0: aload_0
     1: getfield    #65; //Field x:Lscala/None$;
     4: areturn