4.0.0 org.springframework.boot spring-boot-starter-parent 3.4.0 com.example app 0.0.1-SNAPSHOT app 21 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-data-jpa org.springframework.boot spring-boot-starter-validation org.flywaydb flyway-core org.flywaydb flyway-database-postgresql org.postgresql postgresql runtime org.springframework.boot spring-boot-starter-test test org.apache.maven.plugins maven-compiler-plugin -Xlint:all -Xlint:-processing -Xlint:-serial com.diffplug.spotless spotless-maven-plugin 2.44.0 1.23.0