4.0.0 com.baeldung.pmd custom-pmd 0.0.1 custom-pmd jar http://maven.apache.org com.baeldung parent-modules 1.0.0-SNAPSHOT net.sourceforge.pmd pmd-core ${pmdVersion} net.sourceforge.pmd pmd-java ${pmdVersion} org.apache.maven.plugins maven-compiler-plugin ${maven-compiler-plugin.version} ${maven.compiler.source} ${maven.compiler.target} 3.7.0 6.0.1 1.8 1.8