a GraduateStudent class, which extends Student (Seen below), whichs add: i. Appr

Question

a GraduateStudent class, which extends Student (Seen below), whichs add:
i. Appropriate constructor taking as input a person, string (studentId), int and string (major)
ii. String major variable, read-only, cannot be null or 0-length
iii. String minor variable, read-write, can be null, cannot be 0-length



public class Student {

Person person;
String studentId;
Integer graduationYear;

public Student(Person p, String id, int year) throws Exception {

if (p == null || id == null || id == "" || year < 2000)
throw new Exception("Bad Entry");

this.person = p;
this.studentId = id;
this.graduationYear = year;

}


public Integer getGraduationYear() {
return graduationYear;

}


public Person getPerson() {
return person;
}


public String getStudentId() {
return studentId;
}

public void setGraduationYear(Integer graduationYear) {

this.graduationYear = graduationYear;

}

}

Explanation / Answer

public class GraduateStudent extends Student {

       private String major;

       private String minor;

       public GraduateStudent(Person p, String id, int year, String major) throws Exception {

              super(p,id,year);

              if(major != null && major.length() > 0) {

                     this.major = major;

              }

       }

}

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