@Entity @Data @NoArgsConstructor public class Book @Id @GeneratedValue private Long id; private String title; private String author;

Add dependency:

application-dev.properties , application-prod.properties Activate: spring.profiles.active=dev 5. Data Persistence (JPA + Repository) Entity:

In Action: Spring Boot

@Entity @Data @NoArgsConstructor public class Book @Id @GeneratedValue private Long id; private String title; private String author;

Add dependency:

application-dev.properties , application-prod.properties Activate: spring.profiles.active=dev 5. Data Persistence (JPA + Repository) Entity: Spring Boot In Action