String.split returning null when using a dot

Question

I got this simple code:

String ip = \"1.2.3.4\";
String[] ipArray = ip.split(\".\");
System.out.println(ipArray[1]);

And ipArray

Answer 1

Pattern.quote(String) can also be used to quote the whole string. This returns a pattern which will be interpreted literally, special characters will have no special meaning. This might be overkill in this case, but sometimes it can be useful.