SWE 619 Assignment 11
Fall 2023

Goal: Favoring composition over inheritance. Bloch, Item 18.

Consider the InstrumentedSet example from Bloch Item 18 (as well as in-class exercise #10A).

1. Replace Set (globally) with List. There is no problem with equals(). Why not?
2. Replace Set (globally) with Collection. Now equals() does not satisfy its contract.
   • Explain why there is a problem.
   • Demonstrate the problem with a suitable JUnit test.

The GTA will look for correct responses, appropriate JUnit tests, and plausible explanations when doing the grading.