CPE 101 (Turner) --- Lab 8 --- Spring 2003

Laboratory Exercise for Week 8 Thanks are due to Dr. Kevin O'Gorman and Dr. Phil Nico (original author.)

This lab may be done with partners

Lab Objectives

• Understand how to read and symbolically execute a Java program and record the values of selected variables at each point of execution.

Lab Requirements

This lab will involve your reading a program and symbolically executing it on paper (and in your head). You will be expected to predict the output at several points in the program, recording your predictions on paper. After that you will run the code and see exactly what happens when the computer executes the code. At this point, record the results and compare with your predictions. Compare and then explain any discrepancies. The explanation and understanding are really critical here. You can easily explain things to me so that I will think that you understand. However, questions very much like this will appear on a quiz and the final, where your answer and explanation will depend on your true understanding of the principles involved. Please stay with it till you truly understand what is going on.

Remember to keep in mind what "static" means (with reference to variables especially). Also watch for formal parameter lists that can temporarily override other variable names in the class. The same is true for local method variables. Keep track of separate instance variables and their values at given times during the execution ("time" meaning the sequential execution of instructions that will begin with main... remember: execution always begins with the main method!)


I include the code you are to analyze Variable.java and ExamClass.java. I also include a Microsoft Word file you must print out in order to record your work as worksheet.doc.
Due: in lab on Thursday.

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1 May 2003 csturner@csc.calpoly.edu

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