Week 11

Post date: Apr 03, 2020 4:55:21 AM

Defining Classes 1

4.1 Class Definitions

Recommended Self-Test Exercises:

• • p 218: Ex. 3.

  • p 220: Ex. 4.

  • p 228: Ex. 5-9.

In-class Exercises:

1. Implement the following class:

• • • • the instance variable grades is a one dimensional array declared without specifying its size

      • the method displayInformation() displays the 1/ id, 2/ name, 3/ list of grades, and 4/ the average of the grades.

      • the method calculateAverage() returns the average of all the grades in the array

1. Implement a Student class with the following fields and methods:

• • • the method getName() returns the name of the student

    • the method getAverage() returns the total score divided by the number of quizzes only if the number of quizzes in not equal to zero.

    • the method getTotalScore() returns the total score

    • the method printStudent() displays the 1/ name, 2/ total score, 3/ number of quizzes, and 4/ the average of the student.

1. Implement the following class:

• • • the method showInformation() displays 1/ the radius, 2/ the color, 3/ the area, and 4/ the circumference

    • the method getRadius() returns the radius of the circle

    • the method getArea() returns the area of the circle. The area of a circle is the π x radius x radius

    • the method getCircumference() returns the circumference of the circle. The circumference is π x radius x 2

1. Implement the following class: