Static inner classes in scala

Question

What is the analog in Scala of doing this in Java:

public class Outer {
  private Inner inner;

  public static class Inner {
  }

  public Inner getInner()          


        

Answer 1

As others have pointed out, "static" classes should be placed inside the companion object.

In Scala, classes, traits, and objects which are members of a class are path-dependent. For example:

class Button {
  class Click
}


val ok = new Button
val cancel = new Button

val c1 = new ok.Click
val c2 = new cancel.Click

Now c1 and c2 are instances of -different- classes. One class is ok.Click, and the other is cancel.Click. If you wanted to refer to the type of all Click classes, you could say Button#Click.