4.0.0 com.baeldung.architecture architecture 0.0.1-SNAPSHOT architecture jar A Quick and Practical Example of Hexagonal Architecture in Java parent-boot-2 com.baeldung 0.0.1-SNAPSHOT ../parent-boot-2 org.springframework.boot spring-boot-starter-data-jpa com.h2database h2 runtime org.springframework.boot spring-boot-starter-web