4.0.0 core-java-9-jigsaw 0.2-SNAPSHOT core-java-9-jigsaw com.baeldung parent-modules 1.0.0-SNAPSHOT ../../ core-java-9-jigsaw org.apache.maven.plugins maven-compiler-plugin ${maven-compiler-plugin.version} ${maven.compiler.source} ${maven.compiler.target} 1.9 1.9