src/main/java/dev/dao/OrderDetailDao.java

@@ -14,7 +14,6 @@ public class OrderDetailDao {
 
     public void save(OrderDetail detail) {
 
-        // TODO:
         // Insert order detail
 
         String sql = "INSERT INTO order_detail (order_id, menu_item_id, quantity, price) VALUES(?, ?, ?, ?)";
@@ -27,7 +26,7 @@ public class OrderDetailDao {
             preparedStatement.setInt(3, detail.getQuantity());
             preparedStatement.setDouble(4, detail.getPrice());
 
-            preparedStatement.executeQuery();
+            preparedStatement.executeUpdate();
 
         } catch (SQLException e) {
             throw new RuntimeException(e);