Re: Generating a unique string without normal character sets

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <>
Tue, 17 Mar 2009 21:09:54 -0400
Jon Gomez wrote:

It is probably a bad idea to use the sun.* packages, since they may be
unavailable on other JDK platforms or may change (or who knows, could
vanish) between JDK versions, at least according to a report by Sun in
1996. Their use is not advised unless you want to take that risk [2].

And why should anyone want to do that when there is a supported
way !?!?

Only drawback is that ones needs a Java EE environment or
getting JavaMail RI.

Code below.



     public static String b64encode(byte[] b) throws MessagingException,
IOException {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         OutputStream b64os = MimeUtility.encode(baos, "base64");
         return new String(baos.toByteArray());
      public static byte[] b64decode(String s) throws
MessagingException, IOException {
         ByteArrayInputStream bais = new ByteArrayInputStream(s.getBytes());
         InputStream b64is = MimeUtility.decode(bais, "Base64");
         byte[] tmp = new byte[s.length()];
         int n =;
         byte[] res = new byte[n];
         System.arraycopy(tmp, 0, res, 0, n);
         return res;

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