Every swing tutorial out there starts with a good old: c = new Container() w = new Widget() c.add(w) w.addActionListener( …200 bytes of a functor b

Every swing tutorial out there starts with a good old: c = new Container() w = new Widget() c.add(w) w.addActionListener( …200 bytes of a functor boilerplate… ) Also I don’t know java well, but variable/keyed arguments and closures like in python do not exist there, to my knowledge. Am I missing something, or maybe you meant something else?