Class Base64Coder

java.lang.Object
biz.source_code.base64Coder.Base64Coder

public class Base64Coder extends Object
A Base64 Encoder/Decoder.

This class is used to encode and decode data in Base64 format as described in RFC 1521.

Home page: www.source-code.biz
Author: Christian d'Heureuse, Inventec Informatik AG, Zurich, Switzerland
Multi-licensed: EPL/LGPL/AL/BSD.

Version history:
2003-07-22 Christian d'Heureuse (chdh): Module created.
2005-08-11 chdh: Lincense changed from GPL to LGPL.
2006-11-21 chdh:
  Method encode(String) renamed to encodeString(String).
  Method decode(String) renamed to decodeString(String).
  New method encode(byte[],int) added.
  New method decode(String) added.
2009-07-16: Additional licenses (EPL/AL) added.
2009-09-16: Additional license (BSD) added.
2009-09-16: Additional license (BSD) added.
2010-01-27: Package name added.

  • Method Details

    • encodeString

      public static String encodeString(String s)
      Encodes a string into Base64 format. No blanks or line breaks are inserted.
      Parameters:
      s - a String to be encoded.
      Returns:
      A String with the Base64 encoded data.
    • encode

      public static char[] encode(byte[] in)
      Encodes a byte array into Base64 format. No blanks or line breaks are inserted.
      Parameters:
      in - an array containing the data bytes to be encoded.
      Returns:
      A character array with the Base64 encoded data.
    • encode

      public static char[] encode(byte[] in, int iLen)
      Encodes a byte array into Base64 format. No blanks or line breaks are inserted.
      Parameters:
      in - an array containing the data bytes to be encoded.
      iLen - number of bytes to process in in.
      Returns:
      A character array with the Base64 encoded data.
    • decodeString

      public static String decodeString(String s)
      Decodes a string from Base64 format.
      Parameters:
      s - a Base64 String to be decoded.
      Returns:
      A String containing the decoded data.
      Throws:
      IllegalArgumentException - if the input is not valid Base64 encoded data.
    • decode

      public static byte[] decode(String s)
      Decodes a byte array from Base64 format.
      Parameters:
      s - a Base64 String to be decoded.
      Returns:
      An array containing the decoded data bytes.
      Throws:
      IllegalArgumentException - if the input is not valid Base64 encoded data.
    • decode

      public static byte[] decode(char[] in)
      Decodes a byte array from Base64 format. No blanks or line breaks are allowed within the Base64 encoded data.
      Parameters:
      in - a character array containing the Base64 encoded data.
      Returns:
      An array containing the decoded data bytes.
      Throws:
      IllegalArgumentException - if the input is not valid Base64 encoded data.