4.0.0 com.baeldung design-patterns 1.0 jar com.baeldung patterns-parent 1.0.0-SNAPSHOT .. junit junit 4.12 test org.hamcrest hamcrest-core 1.3 test org.assertj assertj-core 3.8.0 test log4j log4j ${log4j.version} com.googlecode.grep4j grep4j ${grep4j.version} UTF-8 1.8 1.8 1.2.17 1.8.7