package CourseRegistrationStarter; public class Main { public static void main(String[] args) { Course AdvancedProgramming = new Course("AdvancedProgramming", "AP1404", 2); Course DataStructures = new Course("DataStructures", "DS2201", 1); Course DatabaseSystems = new Course("DatabaseSystems", "DB3301", 3); Student fateme = new Student("fateme", "404222000", 10); RegistrationSystem A = new RegistrationSystem(); A.addCourseToSystem(AdvancedProgramming); A.addCourseToSystem(DataStructures); A.addCourseToSystem(DatabaseSystems); fateme.addCourse(AdvancedProgramming); fateme.addCourse(DataStructures); fateme.addCourse(DatabaseSystems); fateme.dropCourse(DataStructures); fateme.showRegisteredCourses(); } }