code: public static String getRuntimeVersion() throws IOException {
          String classLoc = ClasspathUtil.locate(MdwVersion.class.getName());
          int dotJarBang = classLoc.lastIndexOf(".jar!");
          if (dotJarBang > 0) {
              String jarFilePath = classLoc.substring(0, dotJarBang + 4);
              if (jarFilePath.startsWith("file:/"))
                  jarFilePath = jarFilePath.substring(6);
              if (!jarFilePath.startsWith("/"))
                  jarFilePath = "/" + jarFilePath;
              try (JarFile jarFile = new JarFile(new File(jarFilePath))) {
                  Manifest manifest = jarFile.getManifest();
                  String version = manifest.getMainAttributes().getValue("MDW-Version");
                  String buildTimestamp = manifest.getMainAttributes().getValue("MDW-Build");
                  return version + " " + buildTimestamp;
              }
          }
          return null;
      }
docs: Includes build timestamp.
  Finds info from META-INF/manifest.mf via classloader.  Does not work from
  within certain containers.  For comprehensive lookup, use ApplicationContext.getMdwVersion().