refactoring: encapsulates the input handling related to enrolling a student in a course

src/main/java/org/example/Administration.java

@@ -509,6 +509,17 @@ public class Administration {
         }
     }
 
+    public void enrollStudentInCourseInteractive() {
+        System.out.println("Enter Student ID:");
+        String studentId = scanner.nextLine(); // Use nextLine for consistent input handling
+        System.out.println("Enter Course ID:");
+        String courseId = scanner.nextLine();
+
+        boolean enrolled = enrollStudentInCourse(studentId, courseId);
+// Feedback for failure is handled within the enrollStudentInCourse method
+
+    }
+
     public void viewCourses() {
         if (courses.isEmpty()) {
             System.out.println("No courses available.");

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

@@ -40,11 +40,7 @@ public class Main {
                     administration.registerUser();
                     break;
                 case 2: // Enroll Student in Course
-                    System.out.println("Enter Student ID:");
-                    String studentId = scanner.next();
-                    System.out.println("Enter Course ID:");
-                    String courseId = scanner.next();
-                    administration.enrollStudentInCourse(studentId, courseId);
+                    administration.enrollStudentInCourseInteractive();
                     break;
                 case 3:
                     // Enroll Prof to Course