week04.pdf - ICT167 Principles of Computer Science Semester 2 2017 Lab Practice Week 4 Internal Students you need to show working versions of your

week04.pdf - ICT167 Principles of Computer Science Semester...

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ICT167 Principles of Computer Science, Semester 2, 2017Lab Practice Week 4 Internal Students: you need to show working versions of your answers to all questions to your tutor. Your tutor will expect to see them by the time of your next lab class in week 6.External students: please include source code for your answers to all questions for your submission. Contact your tutor for submission. Today’s work builds on the fraction class which you produced for question 2 in Week 3’s lab practice. 1. Change your fraction class so that its instance variables numerator and denominator are hidden (i.e. private). Check that your old client class will now not compile (i.e. if the Fraction class instance variable name ‘numerator’ was used in the client class). Explain why. 2. Add a public method isZeroto your fraction class for testing whether the calling fraction is equal to the number zero. Modify your old client class so that it now loops
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