This video seeks to demonstrate how to use the BlueJ debugger to set a breakpoint, watch the values of variables, step through code, and use continue to reach the next breakpoint. The video starts with a basic calculator program that has a nested loop to allow the calculator to run multiple times. The three bugs are: the operator is read, but not reset at the end of the inner loop, the program doesn’t ask for the user to “play again” — and does so automatically, and the “answer” of an expression is not reset to zero each time you start a new expression — causing multiple expression evaluations to report the cumulative sum of all expressions evaluated.

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Very good!!! Excellent use of the debugging tool.