package org.university.core; import java.util.ArrayList; public class Professor extends Employee{ private ArrayList<Course>courses; private String group; public Professor(String firstName, String lastName, String ID, int joiningYear, Department department, String position, double basicIncome,String group) { super(firstName, lastName, ID, joiningYear, department, position, basicIncome); courses=new ArrayList<>(); this.group=group; } public ArrayList<Course> getCourses() { return courses; } public String getGroup() { return group; } public void addCourse(Course c){ courses.add(c); } }