Java Reference
In-Depth Information
To test a class, use an environment for interactive testing, or write a tester class to
execute test instructions.
1. Construct one or more objects of the class that is being tested.
2. Invoke one or more methods.
3. Print out one or more results.
4. Print the expected results.
Figure 6
The Return Value of the getBalance Method in BlueJ
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The MoveTester class in Section 2.8 is a good example of a tester class. That class
runs methods of the Rectangle classȌa class in the Java library.
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