class X509Util implements Closeable, AutoCloseable {

    static String[] getDefaultCipherSuitesForJavaVersion(String javaVersion) {
        Objects.requireNonNull(javaVersion);
        if (javaVersion.matches("\\d+")) {
            // Must be Java 9 or later
            LOG.debug("Using Java9+ optimized cipher suites for Java version {}", javaVersion);
            return DEFAULT_CIPHERS_JAVA9;
        } else if (javaVersion.startsWith("1.")) {
            // Must be Java 1.8 or earlier
            LOG.debug("Using Java8 optimized cipher suites for Java version {}", javaVersion);
            return DEFAULT_CIPHERS_JAVA8;
        } else {
            LOG.debug("Could not parse java version {}, using Java8 optimized cipher suites",
                    javaVersion);
            return DEFAULT_CIPHERS_JAVA8;
        }
    }

    public  X509Util();
    public  X509Util(ZKConfig zkConfig);

}