Question

i need to extract the numbers alone from this text i use sub string to extract the details some times the number decreases so i am getting an error value…

 example(16656);

Answer 1

Use Pattern to compile your regular expression and Matcher to get a particular captured group. The regex I’m using is:

example\((\d+)\)

which captures the digits (\d+) within the parentheses. So:

Pattern p = Pattern.compile("example\\((\\d+)\\)");
Matcher m = p.matcher(text);
if (m.find()) {
  int i = Integer.valueOf(m.group(1));
  ...
}