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Interfaces and Filter Assignment

 
Ron Ingram
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Hello,

I have been working on this assignment for Interfaces and Filters. I keep getting back a bad average and I cannot determine why, however I thought I was going to be able to figure this out. Does anybody see the mistake?

DataSet Class



BankAccount


Filter


Interface



Tester

 
Campbell Ritchie
Sheriff
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It is difficult to know why you got poor marks.
A few points:
  • Why is the Measurer interface not a parameterised type, like Measurer<T>?
  • Same for DataSet and Filter.
  • I don’t like your allowing a null for maximum. See if you can start it off with some default value, maybe one returning 0.
  • The average of 1, 100, 2000, 950 and 4000 is not 3000. What result are you getting and what did you get when you tried it with a calculator?
     
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