4.0.0 core-java-collections-maps-4 0.1.0-SNAPSHOT core-java-collections-maps-4 jar com.baeldung.core-java-modules core-java-modules 0.0.1-SNAPSHOT junit junit ${junit.version} test org.apache.maven.plugins maven-surefire-plugin 3.0.0-M5 !performance UTF-8 1.8 1.8