4.0.0 org.apache.openjpa openjpa-kernel-4 jar OpenJPA Kernel 1.4 OpenJPA Kernel 1.4 http://incubator.apache.org/projects/openjpa org.apache.openjpa openjpa 0.9.0-incubating-SNAPSHOT org.apache.openjpa openjpa-kernel ${pom.version} compile org.apache.maven.plugins maven-compiler-plugin 1.4 1.4