try {
                ExecResult result = run(getJstackCommand(), pid);

                StringBuilder sb = new StringBuilder(String.format("Run %s %s return %s", getJstackCommand(), pid, result));
                if (result.code != 0) {
                    result = run(getJstackCommand(), "-F", pid);
                    sb.append(String.format("Run %s -F %s return %s", getJstackCommand(), pid, result.toString()));
                }