Compare the contents of two Readers to determine if they are equal or not. : Reader « File « Java Tutorial

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 * (the "License"); you may not use this file except in compliance with
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/** * Origin of code: Apache Avalon (Excalibur)
 * @author Peter Donald
 * @author Jeff Turner
 * @author Matthew Hawthorne
 * @author Stephen Colebourne
 * @author Gareth Davis
 * @version CVS $Revision$ $Date$*/
public class Main {
   * Compare the contents of two Readers to determine if they are equal or not.
   * This method buffers the input internally using <code>BufferedReader</code> if they are not
   * already buffered.
   * @param input1
   *            the first reader
   * @param input2
   *            the second reader
   * @return true if the content of the readers are equal or they both don't exist, false
   *         otherwise
   * @throws NullPointerException
   *             if either input is null
   * @throws IOException
   *             if an I/O error occurs
   * @since 1.1
  public static boolean contentEquals(Reader input1, Reader input2) throws IOException
    if (!(input1 instanceof BufferedReader))
      input1 = new BufferedReader(input1);
    if (!(input2 instanceof BufferedReader))
      input2 = new BufferedReader(input2);

    int ch =;
    while (-1 != ch)
      int ch2 =;
      if (ch != ch2)
        return false;
      ch =;

    int ch2 =;
    return (ch2 == -1);

11.29.1.Read and return the entire contents of the supplied Reader. This method always closes the reader when finished reading.
11.29.2.Read from Reader and write to Writer until there is no more input from reader.
11.29.3.Reads characters available from the Reader and returns these characters as a String object.
11.29.4.Transfers all characters that can be read from one Reader to another Reader
11.29.5.Writes all characters from a Reader to a file using the default character encoding.
11.29.6.convert Reader to InputStream
11.29.7.Compare the contents of two Readers to determine if they are equal or not.
11.29.8.An InputStream backed by a Reader
11.29.9.Reader: Reading Text (Characters)
11.29.10.UTF8 Reader
11.29.11.CRLF Terminated Reader