Learning Spring Boot from Zero to Cloud: Part 23 – JdbcTemplate – RowMapper ResultSetExtractor

🎬 Welcome to the “Code Like an Architect” Series! 🚀

This video is part of our growing collection of short, high-impact lessons designed to help you master backend development using Spring Boot. If you’re ready to level up your database access skills, you’re in the right place. 💻⚡

In this episode, we break down two key tools from Spring’s JdbcTemplate: RowMapper and ResultSetExtractor.

You’ll not only understand what they are and how they work, but more importantly — when to use each one, with real-world use cases and clean code examples. 🔍

🧠 What You’ll Learn in This Video:

✅ What is a RowMapper and how it simplifies row-to-object mapping
✅ When and why to use ResultSetExtractor over RowMapper
✅ Hands-on examples with code snippets
✅ A practical case: Grouping rows into a map using ResultSetExtractor
✅ Clear use case comparison to choose the right approach for your needs
✅ When you might combine both interfaces in advanced scenarios

⏱️ Timestamps:

00:00 – Introduction
01:07 – RowMapper
02:29 – ResultSetExtractor
05:38 – When to use what and summary
07:58 – Spring Boot – Code Practice

💬 Got questions or a tricky use case? Drop it in the comments — I’d love to help out.