com.baeldung parent-java 0.0.1-SNAPSHOT ../parent-java 4.0.0 java-collections-maps-3 0.1.0-SNAPSHOT java-collections-maps-3 jar org.springframework spring-core ${spring.version} test org.assertj assertj-core ${assertj.version} test org.apache.commons commons-collections4 ${commons-collections4.version} 4.1 3.6.1 5.2.5.RELEASE