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Stanford CoreNLP provides a set of natural language analysis tools which can take raw English language text input and give the base forms of words, their parts of speech, whether they are names of companies, people, etc., normalize dates, times, and numeric quantities, mark up the structure of sentences in terms of phrases and word dependencies, and indicate which noun phrases refer to the same entities. It provides the foundational building blocks for higher level text understanding applications.

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package edu.stanford.nlp.io;

import java.io.*;

/**
 * This is a convenience class which works almost exactly like 
 * FileReader
 * but allows for the specification of input encoding.
 *
 * @author	Alex Kleeman
 */

public class EncodingFileReader extends InputStreamReader {

  private static final String DEFAULT_ENCODING = "UTF-8";
  /**
   * Creates a new EncodingFileReader, given the name of the
   * file to read from.
   *
   * @param fileName the name of the file to read from
   * @exception java.io.FileNotFoundException  if the named file does not 
   *                   exist, is a directory rather than a regular file,
   *                   or for some other reason cannot be opened for
   *                   reading.
   * @exception java.io.UnsupportedEncodingException  if the encoding does not exist.
   *
   */
  public EncodingFileReader(String fileName) throws UnsupportedEncodingException, FileNotFoundException {
    super(new FileInputStream(fileName), DEFAULT_ENCODING);
  }

  /**
   * Creates a new EncodingFileReader, given the name of the
   * file to read from and an encoding
   *
   * @param fileName the name of the file to read from
   * @param encoding String specifying the encoding to be used
   * @exception java.io.UnsupportedEncodingException  if the encoding does not exist.
   * @exception java.io.FileNotFoundException  if the named file does not exist,
   *                   is a directory rather than a regular file,
   *                   or for some other reason cannot be opened for
   *                   reading.
   *
   */
  public EncodingFileReader(String fileName, String encoding) throws UnsupportedEncodingException, FileNotFoundException {
    super(new FileInputStream(fileName), 
          encoding == null ? DEFAULT_ENCODING: encoding);
  }

  /**
   * Creates a new EncodingFileReader, given the File
   * to read from, and using default of utf-8.
   *
   * @param file the File to read from
   * @exception  FileNotFoundException  if the file does not exist,
   *                   is a directory rather than a regular file,
   *                   or for some other reason cannot be opened for
   *                   reading.
   *  @exception java.io.UnsupportedEncodingException  if the encoding does not exist.
   */
  public EncodingFileReader(File file) throws  UnsupportedEncodingException, FileNotFoundException {
    super(new FileInputStream(file), DEFAULT_ENCODING);
  }

  /**
   * Creates a new FileReader, given the File
   * to read from and encoding.
   *
   * @param file the File to read from
   * @param encoding String specifying the encoding to be used
   * @exception  FileNotFoundException  if the file does not exist,
   *                   is a directory rather than a regular file,
   *                   or for some other reason cannot be opened for
   *                   reading.
   *  @exception java.io.UnsupportedEncodingException  if the encoding does not exist.
   */
  public EncodingFileReader(File file,String encoding) throws  UnsupportedEncodingException, FileNotFoundException {
    super(new FileInputStream(file), 
          encoding == null ? DEFAULT_ENCODING: encoding);
  }

  /**
   * Creates a new FileReader, given the
   * FileDescriptor to read from.
   *
   * @param fd the FileDescriptor to read from
   */
  public EncodingFileReader(FileDescriptor fd) {
    super(new FileInputStream(fd));
  }

}