Hashtable env = new Hashtable();
        env.put("java.naming.factory.initial", "com.sun.jndi.ldap.LdapCtxFactory");
        env.put("java.naming.security.authentication", "simple");
        env.put("java.naming.provider.url", "ldap://localhost:10389");
        env.put(InitialDirContext.SECURITY_PRINCIPAL, "uid=admin,ou=system");
        env.put(InitialDirContext.SECURITY_CREDENTIALS, "secret");
        SearchControls ctl = null;
        String attrArr[] = new String[1];
        attrArr[0] = "sn";
        ctl = new SearchControls(2, 0L, 0, attrArr, false, false);

        String base = "ldap://localhost:10389/dc=simple,dc=wildfly,dc=org";
        String filter = "(uid=UserOne)";

        NamingEnumeration nenum = null;
        DirContext ictx = null;

            ictx = new InitialDirContext(env);
            nenum = ictx.search(base, filter, ctl);

    protected Context getURLOrDefaultInitCtx(String name)
        throws NamingException {
        if (NamingManager.hasInitialContextFactoryBuilder()) {
            return getDefaultInitCtx();
        }
        String scheme = getURLScheme(name);
        if (scheme != null) {
            Context ctx = NamingManager.getURLContext(scheme, myProps);
            if (ctx != null) {
                return ctx;
            }
        }
        return getDefaultInitCtx();
    }