Re: Using "abstract" on a class with no abstract method

  I have a class that is intended for subclassing,
  not for instantiation.

  So I thought, I could tag it with ?abstract?,
  even though it does not have any abstract method.

  Is this a good idea? Can human readers understand
  this application of ?abstract??

  Here is the concrete example:

abstract class MainCommand
extends de.dclj.ram.DefaultDirectedMessage
{ public MainCommand( final int direction ){ super( direction ); }
  @java.lang.Override public java.lang.String description(){ return "MainCommand"; }}

class QuitMainCommand extends MainCommand
{ public QuitMainCommand( final int direction ){ super( direction ); }}

  ?abstract? is foremost a kind of comment, intended
  for human readers of the source code, here.