Implemented registerUser Feature in Main class so the Method cann be called

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

@@ -4,6 +4,7 @@ import java.util.Scanner;
 public class Main {
     public static void main(String[] args) {System.out.println("Hello world!");
 
+        Administration administration = new Administration();
         Scanner scanner = new Scanner(System.in);
         boolean exit = false;
 
@@ -23,6 +24,7 @@ public class Main {
             switch (choice) {
                 case 1:
                     System.out.println("Register User selected");
+                    administration.registerUser();
                     break;
                 case 2:
                     System.out.println("Enter Student ID and Course Code to enroll:");