Obtain the javap's output for any class that contains the inner class declaration
(e.g. "-verbose"
"public class A {
    public class B {
    }
}")

An output looks like:
................
  SourceFile: "A.java"
  InnerClasses:
       public #5= #4 of #2; //B=class A$B of class A
  minor version: 0
................

1. The inner class entry has additional 3-space indent.
2. No space after the comment symbols "//".
3. Comment's position is not appended by current indentation