package ejava.examples.webtier.bo;
   
   import java.util.ArrayList;
   import java.util.List;
   
   public class Student extends Person {
       private static final long serialVersionUID = 1L;
       private List<Grade> grades = new ArrayList<Grade>();
       
      public Student() {}
      public Student(long id) { super(id); }
      public Student(
              long id, String firstName, String lastName, List<Grade> grades) {
          super(id, firstName, lastName);
          setGrades(grades);
      }
  
      public List<Grade> getGrades() {
          return grades;
      }
      public void setGrades(List<Grade> grades) {
          this.grades = grades;
      }
      
      public String toString() {
          StringBuilder text = new StringBuilder();
          text.append(super.toString());
          text.append(", grades=" + grades);
          return text.toString();
      }    
  }