Complete Spring 7 & Spring Boot 4 course from beginner to Advance using first thought principle.
Curated by: Coder Army (29 videos)
In this video, we will learn one of the most important concepts in Spring Boot REST API development: DTOs and Validations. Till now, we were directly sending and receiving Entity objects in our API. But in real-world projects, this is not considered a good practice. That is where DTOs come in. In this lecture, we will understand why DTOs are needed, how to create request and response DTOs, how to protect our Entity class, and how to send clean API responses. We will also learn how to apply validations using annotations like @NotBlank, @NotNull, @Email, @Size, @Min, and more. By the end of this video, your Spring Boot API will look much more professional and production-ready. Topics covered in this video: Why not expose Entity directly in API What is a DTO in Spring Boot Request DTO vs Response DTO Creating DTO classes Mapping Entity to DTO Adding validations in Spring Boot Using @Valid with Request Body Common validation annotations Handling validation errors Building cleaner and professional API responses This is an important step before learning Global Exception Handling, ResponseEntity, and building production-level REST APIs. JAVA Beginner to Advance Series : https://youtube.com/playlist?list=PLQEaRBV9gAFsR15tNo2QLF9d2qc-c018p&si=lNuF5lyt4nKz9Up7 Join System Design WhatsApp Group: https://www.whatsapp.com/channel/0029VbBF1XKF1YlMyYuPM23s Code and Notes: Github : https://github.com/adityatandon15/Spring-Framework-Full-Course We have paid courses on DSA, Web Development , Blockchain, System Design & GenAI. Join Courses: https://strikes.in/ Coder Army Website: https://coderarmy.in/#home Coder Army App: https://play.google.com/store/apps/details?id=com.rohit.negi Connect with Aditya Tandon Instagram : https://www.instagram.com/adityatandon2 LinkedIn : https://www.linkedin.com/in/adityatandon2 Twitter : https://x.com/adityatandon02 Timestamps: