Added dropProfFromCourse function in Main class

src/main/java/org/example/Main.java

@@ -50,6 +50,46 @@ public class Main {
                     break;
                 case 4:
                     // Drop Prof from Course
+                    System.out.println("Please enter Professor ID");
+                    String profID = scanner.next();
+                    while(administration.findProfessorById(profID) == null){
+                        System.out.println("This Professor does not exist");
+                        System.out.println("Please enter a new Professor ID");
+                        profID = scanner.next();
+                    }
+
+                    Professor prof = administration.findProfessorById(profID);
+                    List<Course> courseList = prof.getCoursesTaught();
+
+                    System.out.println("Please enter Course ID");
+                    String courseID = scanner.next();
+
+                    boolean isDeleted = false;
+                    while(!isDeleted) {
+                        //Checks if course exists
+                        while(administration.findCourseByID(courseID) == null ){
+                            System.out.println("This Course does not exist");
+                            System.out.println("Please enter a new Course ID");
+                            courseID = scanner.next();
+
+                        }
+                        //Checks if Prof is enrolled in course
+                        for (Course course : courseList) {
+                            if (course.getCourseID().equals(courseID)) {
+                                courseList.remove(administration.findCourseByID(courseID));
+                                prof.setCoursesTaught(courseList);
+                                System.out.println("Course deleted successfully");
+                                isDeleted = true;
+                                break;
+                            }
+                            System.out.println("The Professor is not enrolled in this course");
+                            System.out.println("Please enter a new Course ID");
+                            System.out.println("To return to main menu enter '0'");
+                            courseID = scanner.next();
+                        }
+
+                    }
+
                     break;
                 case 5:
                     // Drop Student from Course