Here is a simple implementation of the `CourseGrades` class in Java:

```java
public class CourseGrades {
private GradedActivity[] grades;

public CourseGrades() {
grades = new GradedActivity[4];
}

public void setLab(GradedActivity aLab) {
grades[0] = aLab;
}

public void setPassFailExam(PassFailExam aPassFailExam) {
grades[1] = aPassFailExam;
}

public void setEssay(Essay anEssay) {
grades[2] = anEssay;
}

public void setFinalExam(FinalExam aFinalExam) {
grades[3] = aFinalExam;
}

@Override
public String toString() {
String result = "";
for (int i = 0; i

Question

Here is a simple implementation of the `CourseGrades` class in Java:

```java
public class CourseGrades {
    private GradedActivity[] grades;

public CourseGrades() {
        grades = new GradedActivity[4];
    }

public void setLab(GradedActivity aLab) {
        grades[0] = aLab;
    }

public void setPassFailExam(PassFailExam aPassFailExam) {
        grades[1] = aPassFailExam;
    }

public void setEssay(Essay anEssay) {
        grades[2] = anEssay;
    }

public void setFinalExam(FinalExam aFinalExam) {
        grades[3] = aFinalExam;
    }

@Override
    public String toString() {
        String result = "";
        for (int i = 0; i < grades.length; i++) {
            result += "Test " + (i + 1) + " score: " + grades[i].getScore() + ", grade: " + grades[i].getGrade() + "
";
        }
        return result;
    }
}
```

This class has an array `grades` to hold the scores for the lab, pass/fail exam, essay, and final exam. The `setLab`, `setPassFailExam`, `setEssay`, and `setFinalExam` methods are used to set the scores for each of these components. The `toString` method is overridden to return a string that contains the numeric scores and grades for each element in the `grades` array.

Please note that this code assumes the existence of `GradedActivity`, `PassFailExam`, `Essay`, and `FinalExam` classes. You would need to define these classes with appropriate methods and fields as per your requirements.

To demonstrate the class in a program, you would create an instance of `CourseGrades`, set the scores for the lab, pass/fail exam, essay, and final exam using the appropriate methods, and then print the `CourseGrades` object.

Knowee AI · Accepted Answer