Hashtable<String, Object> env = new Hashtable<String, Object>();
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, ldapUsername);
env.put(Context.SECURITY_CREDENTIALS, ldapPassword);
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, ldapAdServer);
env.put("java.naming.ldap.attributes.binary", "objectSID objectGUID");
InitialDirContext ctx = new InitialDirContext(env);
        
String searchFilter = "(&(cn=Иванов Иван Иванович))";
//String searchFilter="(&(cn=Моя группа))";
        
SearchControls searchControls = new SearchControls();
searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
        
NamingEnumeration<SearchResult> results = ctx.search(ldapSearchBase, searchFilter, searchControls); 

if(results.hasMoreElements()) {
    System.out.println("element was found);
} else
    System.out.println("no element was found");