4.0.0 org.springframework.boot spring-boot-starter-parent 2.1.3.RELEASE com.itheima java8stream 0.0.1-SNAPSHOT java8stream Demo project for Spring Boot 1.8 org.springframework.boot spring-boot-starter org.apache.commons commons-collections4 4.4 org.springframework.boot spring-boot-starter-test test org.junit.vintage junit-vintage-engine org.springframework.boot spring-boot-maven-plugin