Student.java

import java.util.ArrayList;
import java.util.List;

/**
 * A students with results.
 */

public class Student {
  private final String firstName;
  private final String lastName;
  private final List<TeachingUnitResult> results;

  /**
   * Constructs a student with the specified first name and last name and no associated results.
   *
   * @param firstName the first name of the constructed student
   * @param lastName the last name of the constructed student
   */

  public Student(String firstName, String lastName) {
    this.firstName = firstName;
    this.lastName = lastName;
    this.results = new ArrayList<>();
  }

  /**
   * Add a grade associated to a teaching unit to the results of the student.
   *
   * @param teachingUnitName the name of the teaching unit of the added result
   * @param grade the grade of the added result
   */
  public void addResult(String teachingUnitName, Grade grade){
    // TODO : add code
  }

  /**
   * Returns a string representation of the student in the format first name last name.
   * @return a string representation of the student
   */
  @Override
  public String toString() {
    // TODO : change code
    return null;
  }


  /**
   * Returns the grades of the student.
   *
   * @return the grades of the student
   */
  public List<Grade> getGrades(){
    // TODO : change code
    return null;
  }

  /**
   * Returns the average grade of the student.
   *
   * @return the average grade of the student
   */
  public Grade averageGrade() {
    // TODO : change code
    return null;
  }

  /**
   * Print via the standard output the name of the student, all results associated to the students and
   * the average grade of the student.
   */