Use Java [Close] to find the index of the first occurrence of integer from the string

I have string xxxy 1 / 1 / 2. I need to use java to find the index of integer for the first time The output will be the first "1" index I need regular expressions

Solution

You don't use regular expressions, but if you have to use them:

String s = "xxxxy 1/1/2";
    Pattern pattern = Pattern.compile("^\\D*(\\d)");
    Matcher matcher = pattern.matcher(s);
    matcher.find();
    System.out.println(matcher.start(1));

Output: 6