Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

The student field in DoCommandVisitor will give you access to the various clothes piles, what the student is currently wearing and the laundry room.   You do NOT have to code up the instantiation of the DoCommandVisitor!   The supplied simulation infrastructure already does that for you.

A word of explanation:  A big deal was made in class and lab about how one should never have public fields because they allow uncontrolled mutations to occur.  You've problaby noticed the public garment field in some of the Command subclasses here.   For convenience's sake, we're exploiting the fact that Commands never need to be mutated (so far as we know).   The garment field in the Receive, Lose and Change commands is marked final, which makes it immutable.  So, we can get away with a public field because the field is immutable.   That said, in general, using an accessor method is still the preferred technique.



The Graphical User Interface (GUI)

...