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# Class w3c.tools.codec.Base64Decoder

    java.lang.Object
       |
       +----w3c.tools.codec.Base64Decoder

public class Base64Decoder
extends Object

Decode a BASE64 encoded input stream to some output stream. This class implements BASE64 decoding, as specified in the MIME specification.

See Also:
  Base64Encoder

##

Base64Decoder(InputStream, OutputStream)
  Create a decoder to decode a stream.
Base64Decoder(String)
  Create a decoder to decode a String.

##

main(String[])
  Test the decoder.
process()
  Do the actual decoding.
processString()
  Do the decoding, and return a String.

##

Base64Decoder

     public Base64Decoder(String input)

  Create a decoder to decode a String.

  Parameters:
    input - The string to be decoded.

Base64Decoder

     public Base64Decoder(InputStream in,
                          OutputStream out)

  Create a decoder to decode a stream.

  Parameters:
    in - The input stream (to be decoded).
    out - The output stream, to write decoded data to.

##

process

     public void process() throws IOException, Base64FormatException

  Do the actual decoding. Process the input stream by decoding it and emiting the resulting bytes into the output stream.

  Throws: IOException
    If the input or output stream accesses failed.
  Throws: Base64FormatException
    If the input stream is not compliant with the BASE64 specification.

processString

     public String processString() throws Base64FormatException

  Do the decoding, and return a String. This methods should be called when the decoder is used in String mode. It decodes the input string to an output string that is returned.

  Throws: RuntimeException
    If the object wasn't constructed to decode a String.
  Throws: Base64FormatException
    If the input string is not compliant with the BASE64 specification.

main

     public static void main(String args[])

  Test the decoder. Run it with one argument: the string to be decoded, it will print out the decoded value.

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