Added setters to Admin Class

src/main/java/org/example/Admin.java

@@ -17,12 +17,20 @@ public class Admin {
     public String getName() {
         return name;
     }
-
+    public void setName(String name) {
+        this.name = name;
+    }
     public String getId() {
         return id;
     }
-
+    public void setId(String id) {
+        this.id = id;
+    }
     public String getRole() {
         return role;
     }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
 }