java - how to filter out some substrings with regex effectively? -

i want filter out srcport , dstport input string. here code tried:

string input = "2014<>10.100.2.3<><189>date=2014-01-16,time=11:26:14,devname=b3909601569,devid=b3909601569,logid=000013,type=traffic,srcip=192.168.192.123,srcport=2072,srcintf=port2,dstip=10.180.1.105,dstport=3206,dstintf=port1,sessionid=121543,status=close,policyid=196,service=mysql,proto=6,duration=10,sentbyte=3910,rcvdbyte=175085,sentpkt=74,rcvdpkt=132";  pattern p = pattern.compile("(srcport=)(\\d+).[\\s]?(dstport=)(\\d+)"); matcher m = p.matcher(input);  stringbuffer result=new stringbuffer();  while (m.find()) {  system.out.println("srcport: " + m.group(2) + " & "); system.out.println("dstport: " + m.group(4));  }  system.out.println(result); 

but not showing output. there mistake in regex

pattern p = pattern.compile("(srcport=)(\\d+).[\\s]?(dstport=)(\\d+)"); 

or println lines

system.out.println("srcport: " + m.group(2) + " & "); system.out.println("dstport: " + m.group(4));" 

any suggestions highly appreciated.

see following changes both regex , captured groups:

    string input = "2014<>10.100.2.3<><189>date=2014-01-16,time=11:26:14,devname=b3909601569,devid=b3909601569,logid=000013,type=traffic,srcip=192.168.192.123,srcport=2072,srcintf=port2,dstip=10.180.1.105,dstport=3206,dstintf=port1,sessionid=121543,status=close,policyid=196,service=mysql,proto=6,duration=10,sentbyte=3910,rcvdbyte=175085,sentpkt=74,rcvdpkt=132";     pattern p = pattern.compile("srcport=(\\d+).*?dstport=(\\d+)"); // update regex     matcher m = p.matcher(input);      stringbuffer result=new stringbuffer();      while (m.find()) {          system.out.println("srcport: " + m.group(1)); //print groups 1 + 2         system.out.println("dstport: " + m.group(2));      }      system.out.println(result);