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());
```

/**
 * @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 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")

	"github.com/minio/minio/internal/hash"
	xhttp "github.com/minio/minio/internal/http"
	"github.com/minio/minio/internal/ioutil"
	"github.com/minio/minio/internal/kms"
	"github.com/minio/minio/internal/logger"
	"github.com/minio/pkg/v3/policy"
	"github.com/minio/pkg/v3/sync/errgroup"
)

const (
	objectLockConfig        = "object-lock.xml"
	bucketTaggingConfig     = "tagging.xml"

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

    /** Role name for admin web config operations */
    public static final String ROLE = "admin-webconfig";

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

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

	}

	objAPI := api.ObjectAPI()
	if objAPI == nil {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
		return
	}

	// Tags XML will not be bigger than 1MiB in size, fail if its bigger.
	tags, err := tags.ParseObjectXML(io.LimitReader(r.Body, 1<<20))
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

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 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.