4.0.0 org.springframework.boot spring-boot-starter-parent 2.3.4.RELEASE com.example contacts 0.0.1-SNAPSHOT contacts Contacts project for Spring Boot 11 org.springframework.boot spring-boot-starter-data-jpa org.springframework.boot spring-boot-starter-web org.postgresql postgresql runtime org.springframework.boot spring-boot-starter-test test org.junit.vintage junit-vintage-engine org.springframework.boot spring-boot-maven-plugin