An alert reader (Ann Wallinger) pointed out that the
Priority Queue example would not compile.
In replacing Vector with Point, I used a private version
of the Enquable interface which did not require the
"display" function, and I didn't include such a function
in my version of Point. The compiler message
("Point does not implement display: must be abstract
Class") includes the problem, but suggests a fix
that isn't very helpful.
Note that the Priority Queue is not a program on
it's own: it has no main function. If you try to
run the sources that are up there, the system will
complain about the lack of a main in Priority Queue.
It should work fine as part of a solution.
I've updated the version of Priority queue on the
server. Please let me know of additional problems.
I'm working on solutions to HW #1, and plan to
post shortly.
- jeff parker
