How to match the forward slash using regex

Question

How to use regex to detect and has the forward slash in path. Also with numbers

Example String str = "/urpath/23243/imagepath/344_licensecode/" I want to use regex to make sure the path is match for numbers with forward slash. the format match must like this "/23243/"

Any idea guys?

Thanks

Answer 1

You need to escape the special character / by using \. However, \ also is the escaping character used by Java, but you want to pass the symbol itself to Regex, so it escapes for Regex. You do so by escaping the escape symbol with \\. So in total you will have \\/ for the slash.

Use this snippet:

String input = ...
Pattern pattern = Pattern.compile("\\/23243\\/");
Matcher matcher = pattern.matcher(input);
if (matcher.find()) {
    System.out.println("Does match!");
} else {
    System.out.println("Does not match!");
}

You can try the Regex itself at regex101: regex101/RkheRs