String parsing for ip addresses

Question

Hello,
Could someone suggest a way or give me some example code to parse the following string?:
I will have a string something like:
Internet Address Src: 1.2.3.4 and Dst: 5.6.7.8
I need to parse this string to store the source IP address 1.2.3.4 in a string call sourceIP and the destination IP address 5.6.7.8 in a string called destinationIP.
Any suggestions appreciated.
Many thanks.

Answer 1

Hello,
Many thanks for the reply. I have taken on board your advice and now have the following code:
  if ((trimmedstring.startsWith("Internet Protocol, Src Addr:"))){
            System.out.println("<br>" + trimmedstring);
              //indexof, substring
            int firstmarker = trimmedstring.indexOf("Src Addr:");
            System.out.println("MARKER1" + firstmarker);
            firstIPAddress = trimmedstring.substring(firstmarker, trimmedstring.indexOf("("));
            String newFirstIPAddress = firstIPAddress.replaceAll("Src Addr:", "");
            System.out.println("NBNB First IP Address" + newFirstIPAddress);
            int secondmarker = trimmedstring.indexOf("Dst Addr: ");
            System.out.println("MARKER2" + secondmarker);
            secondIPAddress = trimmedstring.substring(secondmarker, trimmedstring.indexOf("("));
            String newSecondIPAddress = secondIPAddress.replaceAll("Dst Addr: ", "");
            System.out.println("<br>NBNB Second IP Address" + newSecondIPAddress);
          }However I am getting an error when I try to parse out the second IP address i.e. the destination IP address.
I get the error:
StringIndexOutOfBoundsException: String index out of range: -17
The line that I'm working on is:
Internet Protocol, Src Addr: 157.190.70.67 (157.190.70.67), Dst Addr: 157.190.74.153 (157.190.74.153)
I don't see where my code should be changed as I think the indexes look correct.
Any ideas?
Many thanks