4.0.0 com.example app 1.0-SNAPSHOT jar 21 24.9.0 org.springframework.boot spring-boot-starter-parent 3.5.5 com.vaadin vaadin-bom ${vaadin.version} pom import com.vaadin vaadin com.vaadin vaadin-spring-boot-starter org.springframework.boot spring-boot-starter-data-jpa com.h2database h2 org.springframework.boot spring-boot-starter-test test spring-boot:run org.springframework.boot spring-boot-maven-plugin com.vaadin vaadin-maven-plugin ${vaadin.version} prepare-frontend production com.vaadin vaadin-core com.vaadin vaadin-dev com.vaadin vaadin-maven-plugin ${vaadin.version} build-frontend compile vaadin-directory https://maven.vaadin.com/vaadin-addons vaadin-prereleases https://maven.vaadin.com/vaadin-prereleases vaadin-prereleases https://maven.vaadin.com/vaadin-prereleases