4.0.0 patterns pom patterns com.baeldung parent-modules 1.0.0-SNAPSHOT .. front-controller intercepting-filter design-patterns design-patterns-2 solid dip backoff-jitter javax.servlet javax.servlet-api ${javax.servlet-api.version} provided org.apache.maven.plugins maven-war-plugin ${maven-war-plugin.version} org.eclipse.jetty jetty-maven-plugin ${jetty-maven-plugin.version} 9.4.0.v20161208