Compelete Main class with an example scenario)

src/CourseRegistrationStarter/Main.java

@@ -4,11 +4,34 @@ public class Main {
     public static void main(String[] args) {
         // TODO:
         // 1. Create at least 3 courses
+        Course course1 = new Course("Advanced Programming", "AP1404", 2);
+        Course course2 = new Course("Data Structures", "Ds2201", 1);
+        Course course3 = new Course("Database Systems", "DB3301", 3);
+
         // 2. Create 1 student
+        Student student1 = new Student("Ali", "402222001");
+
         // 3. Create a registration system
+        RegistrationSystem SBU = new RegistrationSystem();
+
         // 4. Add courses to the system
+        SBU.addCourseToSystem(course1);
+        SBU.addCourseToSystem(course2);
+        SBU.addCourseToSystem(course3);
+
         // 5. Register the student in some courses
+        student1.addCourse(course1);
+        student1.addCourse(course2);
+
         // 6. Drop one course
+        student1.dropCourse(course2);
+
         // 7. Print the final registered course list
+        System.out.printf("%s registered courses:\n", student1.getName());
+        student1.showRegisteredCourses();
+
+        System.out.println("\nRemaining informations of courses are as follows: ");
+        SBU.showAllCourses();
+
     }
 }