import org.codelibs.fess.Constants;

/**
 * Utility class for generating and writing thread dumps.
 * Provides methods to capture thread information for debugging purposes.
 */
public class ThreadDumpUtil {
    private static final Logger logger = LogManager.getLogger(ThreadDumpUtil.class);

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    protected ThreadDumpUtil() {

/**
 * Utility class for calculating and verifying PAC (Privilege Attribute Certificate) message authentication codes.
 * This class provides methods for computing MACs using various Kerberos encryption types including
 * ARCFOUR-HMAC-MD5 and AES-based HMAC algorithms.
 */
public class PacMac {

    /**
     * Private constructor to prevent instantiation of utility class.
     */
    private PacMac() {

 */

package jcifs.util;

/**
 * Utility class for hexadecimal dumping of binary data.
 * This class provides methods for converting binary data to readable hex format.
 */

public class Hexdump {

    /**
     * Default constructor.
     */
    public Hexdump() {
        // Utility class - no instance variables to initialize
    }

    /**

import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

import jcifs.BaseTest;

/**
 * Test class for Crypto utility functionality
 */
@DisplayName("Crypto Utility Tests")
class CryptoTest extends BaseTest {

    @Test
    @DisplayName("Should calculate MD4 hash correctly")
    void testMD4Hash() {
        // Given

import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;
import org.opensearch.core.xcontent.XContentHelper;
import org.opensearch.search.SearchHit;

/**
 * Utility class for search engine operations and content formatting.
 * Provides helper methods for working with XContent builders, scrolling through search results,
 * and converting XContent objects to different output formats.
 */

import java.util.Collections;
import java.util.Map;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Stream;

/**
 * Utility class for {@link Stream}.
 */
public abstract class StreamUtil {
    protected StreamUtil() {
        // nothing
    }

    /**
     * Creates a {@link StreamOf} instance from the provided values.

import org.junit.jupiter.params.provider.ValueSource;

import jcifs.Configuration;
import jcifs.RuntimeCIFSException;

/**
 * Comprehensive test suite for Strings utility class.
 * Tests all string encoding/decoding operations and utility methods.
 */
@DisplayName("Strings Utility Tests")
class StringsTest {

    private static final String TEST_STRING = "Hello World";
    private static final String UNICODE_STRING = "Hello 世界 🌍";

 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

/**
 * Utility methods and classes for networking (such as IP addresses and domain names).
 *
 * <p>This package is a part of the open-source <a href="https://github.com/google/guava">Guava</a>
 * library.
 *
 * @author Craig Berry
 */

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.util;

import org.dbflute.optional.OptionalEntity;

/**
 * Utility class for Optional operations.
 */
public class OptionalUtil {

    /**
     * Default constructor.
     */
    private OptionalUtil() {
        // Default constructor
    }

    /**

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.suggest.constants;

/**
 * This class contains constants used in the Fess Suggest module.
 * It is a utility class and should not be instantiated.
 */
public final class SuggestConstants {
    // Private constructor to prevent instantiation
    private SuggestConstants() {
    }

    /** An empty string constant. */