Find errors. If name is a String instance variable, average is a double instance

Question

Find errors.
If name is a String instance variable, average is a double instance variable, and numOfStudents is a static int variable, why won’t the following code from a class compile?

public Student(String s)
{
name = s;
average = getAverage(name);
numOfStudents++;
}
public double getAverage(String x)
{
numOfStudents++;
double ave = StudentDB.getAverage(x);
return ave;
}
public static void setAverage(double g)
{
average = g;
}
a. The constructor can’t increment the numOfStudents variable.
b. The getAverage method can’t increment the numOfStudents variable.
c. The getAverage method can’t call a static method in the StudentDB class.
d. The setAverage method can’t access the average instance variable.

Explanation / Answer

the getAverage method can’t increment the numOfStudents variable.

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