4.0.0 core-java-collections-maps-5 jar core-java-collections-maps-5 com.baeldung.core-java-modules core-java-modules 0.0.1-SNAPSHOT org.junit.jupiter junit-jupiter-api ${junit-jupiter.version} org.springframework spring-core ${spring.version} test org.apache.commons commons-collections4 ${commons-collections4.version} org.apache.maven.plugins maven-compiler-plugin 9 9 5.2.5.RELEASE