return newHasher().putString(input, charset).hash();
  }

  @Override
  public HashCode hashInt(int input) {
    return newHasher(4).putInt(input).hash();
  }

  @Override
  public HashCode hashLong(long input) {
    return newHasher(8).putLong(input).hash();
  }

  @Override
  public HashCode hashBytes(byte[] input) {
    return hashBytes(input, 0, input.length);
  }

  @Override

 * This exception indicates that an external command or process execution encountered an error.
 */
public class CommandExecutionException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructor with error message.
     * @param message The error message describing the command execution failure.
     */
    public CommandExecutionException(final String message) {

 * that don't declare ServletException in their throws clause.
 */
public class ServletRuntimeException extends RuntimeException {

    /** Serial version UID for serialization compatibility. */
    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new ServletRuntimeException wrapping the given ServletException.
     *
     * @param e The ServletException to wrap
     */

 * This exception is used for errors during theme installation, uninstallation, or configuration.
 */
public class ThemeException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new ThemeException with the specified message and cause.
     *
     * @param message the exception message
     * @param cause the underlying cause of this exception

 * This exception is used for errors during thumbnail creation and processing.
 */
public class ThumbnailGenerationException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new ThumbnailGenerationException with the specified message and cause.
     *
     * @param message the exception message

        req.threshold(0); // always create tmp file

        // ## Act ##
        long before = countTmpFiles();
        logger.info("Before request. Number of temp files: " + before);
        req.execute(res -> {
            logger.info("Processing request. Number of temp files: " + countTmpFiles());
        }, e -> {});
        long after = countTmpFiles();
        logger.info("After close response. Number of temp files: " + after);

      checkElementIndex(index, size());
      return (index == 0) ? first : rest[index - 1];
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**
   * @see Lists#asList(Object, Object, Object[])
   */
  private static final class TwoPlusArrayList<E extends @Nullable Object> extends AbstractList<E>

 * within the Fess search framework.
 *
 */
public class QueryParseException extends FessSystemException {

    /** Serial version UID for serialization compatibility */
    private static final long serialVersionUID = 1L;

    /**
     * Constructs a new QueryParseException with the specified ParseException as the cause.
     *
     * @param cause the ParseException that caused this exception
     */

/**
 * Exception that wraps {@link IllegalAccessException}.
 *
 * @author higa
 */
public class IllegalAccessRuntimeException extends ClRuntimeException {

    private static final long serialVersionUID = -3649900343028907465L;

    /**
     * The target class.
     */
    private final Class<?> targetClass;

    /**
     * Creates a {@link IllegalAccessRuntimeException}.
     *

 * @author shinsuke
 */
public class IllegalBlockSizeRuntimeException extends ClRuntimeException {

    private static final long serialVersionUID = 1L;

    /**
     * Creates a new {@link IllegalBlockSizeRuntimeException} with the specified cause.
     *
     * @param cause
     *            the cause
     */