refactoring: more clarity for output messages of Course add and delete functions

src/main/java/org/example/Course.java

@@ -203,7 +203,7 @@ public class Course {
         // Add the course using the provided data
         addCourse(courseName, courseCode, courseCredit, filename);
 
-        System.out.println("Added Course successfully!");
+        System.out.println(courseName + " added successfully!");
     }
 
     /**
@@ -231,6 +231,8 @@ public class Course {
 
             int selection = scanner.nextInt();
 
+            String toDeleteCourse = courses.get(selection-1).getCourseName();
+
             if (selection == 0) {
                 return; // Return to the menu
             } else if (selection < 1 || selection > courses.size()) {
@@ -251,7 +253,7 @@ public class Course {
                     e.printStackTrace();
                 }
 
-                System.out.println("Course deleted successfully.");
+                System.out.println(toDeleteCourse + " deleted successfully.");
                 return;
             }
         }