return this;
    }

    /**
     * Adds a replacement string for the given input character. The specified character will be
     * replaced by the given string whenever it occurs in the input, irrespective of whether it lies
     * inside or outside the 'safe' range.
     *
     * @param c the character to be replaced
     * @param replacement the string to replace the given character

     * @param response the servlet response to use for redirection
     * @param chain the filter chain to continue processing
     * @throws IOException if an I/O error occurs during processing
     * @throws ServletException if a servlet error occurs
     */
    @Override
    public void doFilter(final ServletRequest request, final ServletResponse response, final FilterChain chain)
            throws IOException, ServletException {

   *
   * @throws IOException if an I/O error occurs
   */
  @Override
  public void writeChar(int v) throws IOException {
    writeShort(v);
  }

  /**
   * Writes a {@code String} as specified by {@link DataOutputStream#writeChars(String)}, except
   * each character is written using little-endian byte order.
   *
   * @throws IOException if an I/O error occurs
   */
  @Override

     *
     * @param ps
     *            {@link PreparedStatement}. Must not be {@literal null}.
     * @return {@link ResultSet}
     * @throws SQLRuntimeException
     *             If a {@link SQLException} occurs.
     */
    public static ResultSet executeQuery(final PreparedStatement ps) throws SQLRuntimeException {
        assertArgumentNotNull("ps", ps);

        try {
            return ps.executeQuery();

   * close or flush either object.
   *
   * @param from the object to read from
   * @param to the object to write to
   * @return the number of characters copied
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue
  public static long copy(Readable from, Appendable to) throws IOException {
    // The most common case is that from is a Reader (like InputStreamReader or StringReader) so

   * writer each time it is called.
   *
   * <p>The caller is responsible for ensuring that the returned writer is closed.
   *
   * @throws IOException if an I/O error occurs while opening the writer
   */
  public abstract Writer openStream() throws IOException;

  /**
   * Opens a new buffered {@link Writer} for writing to this sink. The returned stream is not

   * reader each time it is called.
   *
   * <p>The caller is responsible for ensuring that the returned reader is closed.
   *
   * @throws IOException if an I/O error occurs while opening the reader
   */
  public abstract Reader openStream() throws IOException;

  /**
   * Opens a new {@link BufferedReader} for reading from this source. This method returns a new,

   * reader each time it is called.
   *
   * <p>The caller is responsible for ensuring that the returned reader is closed.
   *
   * @throws IOException if an I/O error occurs while opening the reader
   */
  public abstract Reader openStream() throws IOException;

  /**
   * Opens a new {@link BufferedReader} for reading from this source. This method returns a new,

   * @return a byte array containing all the bytes from file
   * @throws IllegalArgumentException if the file is bigger than the largest possible byte array
   *     (2^31 - 1)
   * @throws IOException if an I/O error occurs
   */
  public static byte[] toByteArray(File file) throws IOException {
    return asByteSource(file).read();
  }

  /**

  }

  /**
   * Reads all bytes from a URL into a byte array.
   *
   * @param url the URL to read from
   * @return a byte array containing all the bytes from the URL
   * @throws IOException if an I/O error occurs
   */
  public static byte[] toByteArray(URL url) throws IOException {
    return asByteSource(url).read();
  }

  /**
   * Reads all characters from a URL into a {@link String}, using the given character set.