refactoring: extracting sampleAdmins in AdministrationTest file

src/test/java/org/example/AdministrationTest.java

@@ -12,6 +12,8 @@ class AdministrationTest {
     private static final Student sampleStudent2 = new Student("Jesse Pinkman", "S789012", "Student");
     private static final Professor sampleProf = new Professor("P1001", "Aaron Levi", "Professor");
     private static final Professor sampleProf2 = new Professor("P1002", "Diana Richter", "Professor");
+    private static final Admin sampleAdmin = new Admin("Saul Goodman", "A123456", "Admin");
+    private static final Admin sampleAdmin2 = new Admin("Mike Unknown", "A789012", "Admin");
 
     // Test the findProfessorById Method
     @Test
@@ -95,13 +97,9 @@ class AdministrationTest {
      */
     @Test
     void deleteAdmin() {
-        // Create some sample admins
-        Admin admin1 = new Admin("Saul Goodman", "A123456", "Admin");
-        Admin admin2 = new Admin("Mike Unknown", "A789012", "Admin");
-
         // Add admins to the administration
-        admin.addAdmin(admin1);
-        admin.addAdmin(admin2);
+        admin.addAdmin(sampleAdmin);
+        admin.addAdmin(sampleAdmin2);
 
         // Attempt to delete an admin (admin1)
         boolean deleted = admin.deleteAdmin("A123456");