Java Derp (Experienced)

rogan

rogan

rogan

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Joined
15 Jul 2011
Posts
1,528
Location
London
Basically totally stuck on a piece of Java work..

Its basically a silly 'simulation' of a queue/buffer system..

You tell the program you have X servers, requests come in at a rate of Y, requests take Z 'time units' to process and you have a buffer queue of size V.

Simulation lasts 1M time units (iterations of the loop)

Example output of a working program is...

Code: 
./lab3 10000 3 2 25
Total Requests:       333035 
Rejected Requests:    243035 
Percentage of requests rejected:  72.975815
Average Queue Size: 9795.746917 
Average Response Time:  114658.564625 

Requests Completed at the end of the simulation:  79998 
Requests Running at the end of the simulation: 2 
Queue length at the end of simulation: 10000


My code is here...
http://pastebin.com/FarLtS80
(Requests, Servers, and Queue are modelled as objects stored in an ArrayList)

My problem is that i never get rejected requests, so i dont think requests ever get added to the server, either that or that the Queue keeps going after the limit (hence the override of add in Queue.java to try limit the size to the inputted value)
 
I've been fiddling with that, and using this..

private static ArrayList<Queue> Q;

but it always gives me the obvious following error

Code: 
symbol  : method add(Request)
location: class java.util.ArrayList<Queue>
        if (Q.add(newRequest(x))) {
             ^
1 error
 
Ok so its definitely the way im going about this system, as an arraylist is just an array so i cant have an arraylist of type object1 that contains object2

back to the design board
 
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