* selecting the {@code VarHandleAtomicHelper} strategy.
   */
  private static final ClassLoader NO_VAR_HANDLE =
      getClassLoader(ImmutableSet.of("java.lang.invoke.VarHandle"));

  /**
   * This classloader disallows {@link java.lang.invoke.VarHandle} and {@link sun.misc.Unsafe},
   * which will prevent us from selecting the {@code UnsafeAtomicHelper} strategy.
   */

 * directory metadata and reduce network round-trips for directory operations.
 */
public class DirectoryLeaseState {

    /**
     * Private constructor to prevent instantiation of this utility class
     */
    private DirectoryLeaseState() {
        // Utility class - prevent instantiation
    }

    /**
     * Directory Read and Handle caching (RH) - recommended for directory operations
     */

   * selecting the {@code VarHandleAtomicHelper} strategy.
   */
  private static final ClassLoader NO_VAR_HANDLE =
      getClassLoader(ImmutableSet.of("java.lang.invoke.VarHandle"));

  /**
   * This classloader disallows {@link java.lang.invoke.VarHandle} and {@link sun.misc.Unsafe},
   * which will prevent us from selecting the {@code UnsafeAtomicHelper} strategy.
   */

 */
package jcifs.util;

import java.util.regex.Pattern;

/**
 * Comprehensive input validation utility for SMB protocol implementation.
 * Provides validation methods to prevent buffer overflows, injection attacks,
 * and other security vulnerabilities.
 */
public final class InputValidator {

    private InputValidator() {
        // Utility class
    }

 * - Uses ConcurrentLinkedQueue for O(1) operations
 * - Lock-free operations for better concurrency
 * - Proper buffer validation and limits
 */
public class BufferCache {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private BufferCache() {
        // Utility class - not instantiable
    }

    private static final int MAX_BUFFERS = Config.getInt("jcifs.smb1.smb.maxBuffers", 16);

 * SMB3 directory leasing is available and enabled.
 */
public class SmbFileDirectoryLeasingExtension {

    /**
     * Private constructor to prevent instantiation of this utility class
     */
    private SmbFileDirectoryLeasingExtension() {
        // Utility class - prevent instantiation
    }

    private static final Logger log = LoggerFactory.getLogger(SmbFileDirectoryLeasingExtension.class);

    /**

   */
  internal val isMultiplexed: Boolean
    get() = http2Connection != null

  /** Prevent further exchanges from being created on this connection. */
  override fun noNewExchanges() {
    withLock {
      noNewExchanges = true
    }
    connectionListener.noNewExchanges(this)
  }

  /** Prevent this connection from being used for hosts other than the one in [route]. */
  internal fun noCoalescedConnections() {

/**
 * 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. */
    public static final String EMPTY_STRING = "";

    /** The system property name for user dictionary encoding. */

     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The version number of the scheduler for optimistic locking.
     * This field is required to prevent concurrent modification conflicts
     * by ensuring the scheduler hasn't been modified by another process.
     */
    @Required
    @ValidateTypeFailure
    public Integer versionNo;

 */
package org.codelibs.fess.crawler.util;

/**
 * Utility class for character-related operations.
 */
public final class CharUtil {
    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private CharUtil() {
    }

    /**
     * Checks if the given character is a valid URL character.
     *
     * Valid URL characters include: