Re: Splitting string and adding a character to the string

From:

Lew <lew@lewscanon.com>

Newsgroups:

comp.lang.java.help

Date:

Mon, 04 Feb 2008 10:24:01 -0500

Message-ID:

<156dnZPAptWPszranZ2dnUVZ_uOmnZ2d@comcast.com>

christopher_board@yahoo.co.uk wrote:

Hi all,
I am currently developing a java application that has to deal with MAC
addresses from a computer. The program gets the mac addresses from a
file which has been exported from the DHCP and only exports the mac
address as a single line, for example AA54BG4G3G. This is no good for
the program has the program has to deal with the mac address in the
proper format. How would I go about splitting the String and then
adding a : in between each split to ensure that it is the correct
format. For example so it would look something like AA:54:BG:4G:3G.

Any help in this matter would be highly appreciated.

Thank you

String method( String source )
{
  String [] splits = split( source );
  if ( splits.length == 0 )
  {
    return "";
  }
  StringBuilder sb = new StringBuilder( splits [0]);
  for ( ix = 1; ix < splits.length; ++ix )
  {
    sb.append(':').append( splits [ix] );
  }
  return sb.toString();
}

The split() method will cut out chunks of your source String, such as every
pair of characters, according to however you have to divide up the input.

--
Lew