public class Student {

  private String name;                                    // every Student has a name (this is not the only instance variable) 

  public String getName() {                               // accessor for the name instance variable 
    return name; 
  }

  Student() { }                                           // default constructor to create a volunteer (no name, etc.) 

  Student(String givenName) {                             // constructor to create a Student object with the given name 
    name = givenName;                                    
  }

  void addQuiz(int newScore) {                            // add a new score: we need a variable to remember the total score thus far
    totalScore = totalScore + newScore; 
    numberOfScores = numberOfScores + 1;                  // we also need a variable that counts how many scores we've collected thus far 
  } 

  private int totalScore;                                 // here's the instance variable we need to keep track of scores

  int getTotalScore() {                                   // instance method: accessor for the totalScore 
    return totalScore; 
  }

  private int numberOfScores;                             // instance variable storing the number of scores; incremented by addQuiz 

  double getAverageScore() {                              // instance method to report the average score:
    return (double)totalScore / numberOfScores;           //   divide the sum by the number of scores 
  }   

  public static void main(String[] args) {                // main method as indicated in the homework assignment
    Student a = new Student("Larry"); 
    a.addQuiz(10);                                        // this is file:        Student.java 
    a.addQuiz(9);                                         // compile with   javac Student.java 
    a.addQuiz(8);                                         // run with:      java Student 

    System.out.println("Grade report for: " + a.getName()); 
    System.out.println("Total score: " + a.getTotalScore()); 
    System.out.println("Average score: " + a.getAverageScore()); 
  }

}