/**
 * The provider of user locale process.
 *
 * @author jflute
 */
public class FessUserLocaleProcessProvider implements UserLocaleProcessProvider {
    private static final Logger logger = LogManager.getLogger(FessUserLocaleProcessProvider.class);

    @Override
    public boolean isAcceptCookieLocale() {
        return false;
    }

    @Override

public class FessUserLocaleProcessProviderTest extends UnitFessTestCase {

    private FessUserLocaleProcessProvider provider;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        provider = new FessUserLocaleProcessProvider();
    }

    @Override
    protected void tearDown(TestInfo testInfo) throws Exception {

    }

    protected Consumer<List<String>> createMessageNameList() {
        return nameList -> nameList.add("fess_message");
    }

    protected FessUserLocaleProcessProvider createUserLocaleProcessProvider() {
        return new FessUserLocaleProcessProvider();
    }

    protected FessUserTimeZoneProcessProvider createUserTimeZoneProcessProvider() {
        return new FessUserTimeZoneProcessProvider();
    }

| `LanguageHelper` | `org.codelibs.fess.helper` | Language detection and validation |
| `SystemHelper` | `org.codelibs.fess.helper` | UI language dropdown builder |
| `FessUserLocaleProcessProvider` | `org.codelibs.fess.mylasta.direction.sponsor` | User locale detection |

## Language Detection and Selection

### User Interface Language

Fess determines the UI language in this order: