public String getRunningVersion() throws IOException {
    if (!runningVersion.isPresent()) {
      runningVersion = readRunningVersionFromManifest();
    }
    return runningVersion.orElse("");
  }
Check version of running application. Version is read from /META-INF/MANIFEST.MF file

@return currently running version
@throws IOException
olv-core/src/main/java/pl/otros/logview/updater/VersionUtil.java