* in Fess web templates, including date formatting, localization, file operations, and
 * query parameter handling.
 *
 * @since 1.0
 */
public class FessFunctions {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(FessFunctions.class);

    /** Prefix for geographic query parameters */
    private static final String GEO_PREFIX = "geo.";

CoreLib supports multiple logging frameworks. Configure your preferred logger:

```java
// Use with SLF4J (add slf4j-api dependency)
Logger logger = Logger.getLogger(MyClass.class);

// Use with Commons Logging (add commons-logging dependency)  
Logger logger = Logger.getLogger(MyClass.class);

// Use with Java Util Logging (built-in)
Logger logger = Logger.getLogger(MyClass.class.getName());
```

import jakarta.annotation.Resource;

/**
 * API action for admin key match management.
 *
 */
public class ApiAdminKeymatchAction extends FessApiAdminAction {

    /** The logger for this class. */
    private static final Logger logger = LogManager.getLogger(ApiAdminKeymatchAction.class);

    // ===================================================================================

	lockServer := &lockRESTServer{
		ll: newLocker(),
	}

	logger.FatalIf(lockRPCForceUnlock.Register(gm, lockServer.ForceUnlockHandler), "unable to register handler")
	logger.FatalIf(lockRPCRefresh.Register(gm, lockServer.RefreshHandler), "unable to register handler")
	logger.FatalIf(lockRPCLock.Register(gm, lockServer.LockHandler), "unable to register handler")

          "testEquality");

  private static final Chopper TEST_SUFFIX =
      suffix("Test").or(suffix("Tests")).or(suffix("TestCase")).or(suffix("TestSuite"));

  private final Logger logger = Logger.getLogger(getClass().getName());
  private final ClassSanityTester tester = new ClassSanityTester();
  private Visibility visibility = Visibility.PACKAGE;
  private Predicate<Class<?>> classFilter =

/**
 * @author FreeGen
 */
public class WebAuthentication extends BsWebAuthentication {

    private static final long serialVersionUID = 1L;

    private static final Logger logger = LogManager.getLogger(WebAuthentication.class);

    private WebConfig webConfig;

    public Authentication getAuthentication() {
        return new AuthenticationImpl(getAuthScope(), getCredentials(), getAuthScheme());

import java.util.List;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * This class updates scores of documents.
 */
public class ScoreUpdater {
    /**
     * Constructor.
     */
    public ScoreUpdater() {
        super();
    }

    private static final Logger logger = LogManager.getLogger(ScoreUpdater.class);

import org.dbflute.utflute.core.PlainTestCase;

/**
 * @author shinsuke
 *
 */
public class MsWordExtractorTest extends PlainTestCase {
    private static final Logger logger = LogManager.getLogger(MsWordExtractorTest.class);

    public MsWordExtractor msWordExtractor;

    @Override
    protected void setUp() throws Exception {
        super.setUp();

     */
    public AdminDictStopwordsAction() {
        super();
    }

    /** The role for this action. */
    public static final String ROLE = "admin-dict";

    private static final Logger logger = LogManager.getLogger(AdminDictStopwordsAction.class);

    // ===================================================================================

 */
public class CurlHelper {

    /**
     * Default constructor.
     */
    public CurlHelper() {
        // Empty constructor
    }

    private static final Logger logger = LogManager.getLogger(CurlHelper.class);

    private SSLSocketFactory sslSocketFactory;

    private NodeManager nodeManager;

    /**
     * Initializes the CurlHelper with SSL configuration and node manager.