Project stuck at Level 2 on Codecrunch but runs fine till Level 7

[nowknowing]

Description

Hi, my project runs fine on jshell for all levels.
For level 2 I javac all my neccessary files,
and it all works fine, but on CodeCrunch it fails to find my ArriveEvent class.
Might it be due to Cyclic dependency in my methods that string from ArriveEvent?

All my non Main class are packaged in the same cs2030.simulator

Topic:

Screenshots (if any):

[itmeruoxin]

can check if your parent Event class used "instanceof" any subclass? :) happened to me when i added instanceof RestEvent!

[nowknowing]

No I dont use any instanceof in the parent Event class.
The parent class Event is clean.

Just that my each extending event(Arrive, Serve, done etc)
upon calling .execute()
calls the next event so they are cyclic.
In particular because Done.execute() makes new ServeEvent in certain cases.
and ServerEvent.execute() gives a Done() event.

[frisciliasultan]

I'm guessing DoneEvent and ServeEvent depend on each other. Happened to me before, my jshell worked but codecrunch was stuck at level 2. It was solved when the cyclic dependencies were resolved. Hope you can find the cyclic dependency and it should be fine after that! :)

[nowknowing]

OH no
yes I am able to find the cyclic dependency but it'd mean big changes if it weren't allowed.
So this happens because cyclic dependency is banned here?

[itmeruoxin]

yea, prof banned cyclic dependency on codecrunch
maybe can try to throw the Done -> Serve transition into your simulation class? all the best!

[Mavvvvv]

This is because code crunch specifically checks for cyclic dependencies and will flag it out. The cyclic dependency is probably because execute() of DoneEvent returns serveEvent and execute of serveEvent returns DoneEvent.
I had this same problem previously and how I go about this issue is to make my execute() of DoneEvent to return null and write the DoneEvent.execute() logic in Main.

[nowknowing]

Oh yes thank you vm, I managed to just pluck out my function into my driver class.

but now it has stopped on level 3 since the input is different. Must we create a Main method for each level? HOw does it work?

[nowknowing]

Ok i guess i can vary with input

[itmeruoxin]

yep can check length of args