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AP Computer Science A/Unit 5: Writing Classes
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Object Instantiation and Method Call

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Consider the following class definitions. Which code segment, when substituted for // [Missing Line] in the main method, will correctly instantiate a GradePointAvg object and call its calculateGPA method?

public class Driver {
    public static void main(String[] args) {
        // [Missing Line]
    }
}

public class GradePointAvg {
    public double calculateGPA() {
        return 3.5;
    }
}
A

System.out.println(GradePointAvg.calculateGPA());

B

GradePointAvg avg = new GradePointAvg; System.out.println(avg.calculateGPA());

C

GradePointAvg avg = GradePointAvg(); System.out.println(avg.calculateGPA());

D

GradePointAvg avg = new GradePointAvg(); System.out.println(avg.calculateGPA());

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