✅ Production code @Repository public interface ProductRepository extends JpaRepository<Product, Long> { /** * select * * from product * where selling_status IN ('SELLING',...

✅ Diagram ✅ Product Entity @Entity @Getter @NoArgsConstructor(access = AccessLevel.PROTECTED) public class Product extends BaseEntity { @Id @GeneratedValue(strategy = GenerationType.IDENT...

✅ Bridge decouple abstract and implementation bridge can connect abstract and concrete ✅ Structure bridge Abstraction -----> Implementor | | Refine...

👍🏻 Reusability of existing code can reuse existing code without having to modify it, thanks to a new adapter 👉🏻 OC principle One class does one thing, adapter class does the adapter work ...

✅ C:/ProgramFiles, c:/ProgramFiles x86 for storing applications if lower than 4GB, x86 ⚠️ you cannot delete the files manually ❌ you need to use CCleaner tool : piriform.com/ccleaner ...

✅ In windows official webpage choose the version 11, 10, 8.1, 7… rename the iso with details 👀 Wwindows1164b22H2 ✅ Choose descargar do not click on update actualizar ahora you will ...

Loose coupling OC principle default in interface 🛠️ When to use factory When you want to create several types of smth with different values give the creation role to a factory 👀 Yo...

✅ Layered Architecutre in Spring ❓ why use layered architecture? separation of concerns to organize code by responsitbility Presentation Layer Controller: handles HTTP request &am...

✅ TDD red blue green 🔴 first create the test code //test code @DisplayName("Calculate the total price of beverages in order") @Test void getTotalPrice() { //give...

✅ / root directory: origin of the tree root user are not the same! ✅ Level 0 / means root, origin of the tree kernel root directory all mean the same ✅ Level 1 all have ...