regex getting the first instance of a number from a string

Question

I return the following string from a webpage

Order Number: 1509596 Customer Number: 8

but it coul

Answer 1

if you change orderNumber.replaceAll("[^0-9]", "")

to

orderNumber.replaceAll("[^0-9]", ",") hence

you will get ,1509596,8 as an answer,

I think this is probably help you to solve ans.

Answer 2

String firstNumber = str.replaceAll("^\\D*(\\d+).*", "$1");

Answer 3

I can't think of a single line that would accomplish this, but the following should work:

String orderString = "Order Number: 1509596 Customer Number: 8";
Pattern p = Pattern.compile("[0-9]+");
Matcher m = p.matcher(orderString);
if (m.find())
{
  String orderNr = m.group();
  System.out.println(orderNr);
}