Question

Programming assignment for Java:

Do not add any other instance variables to any class, but you can create local variables in a method to accomplish tasks. Do not create any methods other than the ones listed below.

Step 1 Develop the following class: Class Name: College Degree Access Modifier: public Instance variables Name: major Access modifier: private Data type: String Name: numberOfCourses Access modifier: private Data type: int Name: courseNameArray Access modifier: private Data type: String Name: courseCreditArray Access modifier: private Data type: int[] Static variables Name: maximumNumberOfCourses Access modifier: private Data type: int Initial Value: 40

Answer 1

public class CollegeDegree {
    private String major;
    private int numberOfCourses;
    private String[] courseNameArray;
    private int[] courseCreditArray;
    private static int maximumNumberOfCourses = 40;

    public CollegeDegree() {
        this.major = "";
        this.numberOfCourses = 0;
        this.courseNameArray = new String[maximumNumberOfCourses];
        this.courseCreditArray = new int[maximumNumberOfCourses];
    }

    public void setMajor(String major) {
        this.major = major;
    }

    public String getMajor() {
        return major;
    }

    public void addCourse(String courseName, int numberOfCredits) {
        if(numberOfCourses >= 1 && numberOfCourses <= 5 && numberOfCourses < courseNameArray.length) {
            courseNameArray[numberOfCourses] = courseName;
            courseCreditArray[numberOfCourses] = numberOfCredits;
            numberOfCourses++;
        }
    }

    public String getCourses() {
        String courses = "";
        for (int i = 0; i < numberOfCourses; i++) {
            courses += courseNameArray[i];
            if (i < numberOfCourses - 1) courses += " ";
        }
        return courses;
    }

    public int getNumberOfCourses() {
        return numberOfCourses;
    }

    public int geTotalNumberOfCredits() {
        int credits = 0;
        for (int i = 0; i < numberOfCourses; i++) {
            credits += courseCreditArray[i];
        }
        return credits;
    }

    public static void increaseMaximumNumberOfCourses(int nexMaximumNumberOfCourses) {
        if (nexMaximumNumberOfCourses > maximumNumberOfCourses) maximumNumberOfCourses = nexMaximumNumberOfCourses;
    }

    public static int getMaximumNumberOfCourses() {
        return maximumNumberOfCourses;
    }
}