Java ORM Standard JPA Programming - Basics
For those who are new to JPA or who use JPA in practice but lack basic theory, By learning the basic theory of JPA solidly, even beginners can confidently use JPA in practice.

Spring Core Principles Lecture Open!
Spring Core Principles Lecture Open
Hello. After releasing the Spring introductory course, thanks to the support of many people, I have finally opened the Spring core principles course!
Lecture Introduction: Spring Core Principles - Basics
This lecture starts from the reason why Spring was created by going back 20 years ago when there was no Spring. And we also go back to that time and create a sample application with pure Java code without Spring. As the requirements change, problems are discovered one by one, and to solve the problems, we solve the problems by applying good object-oriented principles to the code one by one. Through the process of developing the application sample code in this way, you can naturally understand good object-oriented principles (SOLID), IoC, DI, and realize why the Spring container is necessary.
Rather than simply explaining the functions in the Spring reference documentation one by one, we will explain why Spring was created and why Spring provides these functions, as well as the core principles. After learning, you will be able to use the functions provided by Spring well, and you will also be able to deeply understand the essence of Spring and object-oriented design. Therefore, you can properly understand and utilize the core Spring technologies in practice .
Thank you^^!





