4.0.0 org.springframework.boot spring-boot-starter-parent 2.2.5.RELEASE com.baeldung. hexagonaljava 0.0.1-SNAPSHOT hexagonaljava Demo project for Spring Boot 1.8 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-test test org.junit.vintage junit-vintage-engine org.springframework.boot spring-boot-starter-jdbc com.h2database h2 runtime org.springframework.boot spring-boot-maven-plugin