public static void main(String[] args) throws Exception {
    try {
      boolean showHelp = true;
      CommandLine cli = new DefaultParser().parse(options(), args);
      if (cli.hasOption("lc")) {
        listCiphers();
        showHelp = false;
      }

      if (cli.hasOption("tu")) {
        testUnlimitedKeyJCEPolicy();
        showHelp = false;
      }

      if (showHelp) {
        printHelp(null);
      }
    } catch (UnrecognizedOptionException e) {
      printHelp(e);
    }

  }
JcePolicyInfo provides information about the JVM's installed JCE (Java Cryptology Enhancements)
policy.
ambari-agent/src/main/java/org/apache/ambari/tools/jce/JcePolicyInfo.java