4.0.0 org.springframework.boot spring-boot-starter-parent 4.1.1 com.example SpringQuestion3 0.0.1-SNAPSHOT SpringQuestion3 21 org.springframework.boot spring-boot-starter-data-jpa com.mysql mysql-connector-j runtime org.springframework.boot spring-boot-starter-data-jpa-test test org.springframework.boot spring-boot-maven-plugin