Project #9

Implement a solution for Project #9.2 from Project #9 of Hands on Testing Java.

You must do extensive JUnit testing. These points on the gradesheet will be doubled, if not tripled.

Extra Credit (10 points)

Add a new abilities to a GradeBook: generate a histogram from the grades. This will involve adding other methods to GradeBook; do not forget to test them separately!

Testing Histograms themselves can be tricky. More on this coming...