diff --git a/bookstore/src/main/java/com/fjordtek/bookstore/model/BookEventHandler.java b/bookstore/src/main/java/com/fjordtek/bookstore/model/BookEventHandler.java
index a309d68..6feba42 100644
--- a/bookstore/src/main/java/com/fjordtek/bookstore/model/BookEventHandler.java
+++ b/bookstore/src/main/java/com/fjordtek/bookstore/model/BookEventHandler.java
@@ -7,19 +7,6 @@ import org.springframework.data.rest.core.annotation.HandleAfterCreate;
 import org.springframework.data.rest.core.annotation.RepositoryEventHandler;
 import org.springframework.stereotype.Component;
 
-/*
- * When using REST API to add a new book, we need to add a corresponding
- * book hash Id to BOOK_HASH table, as well.
- *
- * For instance, this is a case with the following alike curl commands:
- *     curl --request POST --header "Content-Type: application/json" --data
- *     '{"title":"Bloody Chamber", ...}' http://localhost:8080/api/booklist
- *
- * Ref: https://docs.spring.io/spring-data/rest/docs/current/reference/html/#events
- *      https://stackoverflow.com/questions/49504103/override-spring-data-rest-post-method
- *      https://www.baeldung.com/spring-data-rest-events
- */
-
 @Component
 @RepositoryEventHandler(Book.class)
 public class BookEventHandler {
@@ -27,6 +14,18 @@ public class BookEventHandler {
 	@Autowired
 	private BookHashRepository bookHashRepository;
 
+	/*
+	 * When using REST API to add a new book, we need to add a corresponding
+	 * book hash Id to BOOK_HASH table, as well.
+	 *
+	 * For instance, this is a case with the following alike curl commands:
+	 *     curl --request POST --header "Content-Type: application/json" --data
+	 *     '{"title":"Bloody Chamber", ...}' http://localhost:8080/api/booklist
+	 *
+	 * Ref: https://docs.spring.io/spring-data/rest/docs/current/reference/html/#events
+	 *      https://stackoverflow.com/questions/49504103/override-spring-data-rest-post-method
+	 *      https://www.baeldung.com/spring-data-rest-events
+	 */
 	@HandleAfterCreate
 	public void handleAfterCreate(Book book) {
 		BookHash bookHash = new BookHash();