Given Code

Here type in the interface of the code which the student shall implement.

Make sure the class and method names used in here are identical with the ones in your test file you want to use for this question. Otherwise the student response won't be executed and you will have to grade each student response manually.

The class names need to be non-public in order to compile properly. At the same time this allows to use several classes to be used in one JUnit-test-file.