Need regular expression for format where maximum 7 digits are allowed, with comma after every third digit.
Valid values are:
7
77
555
1,234
12,345
444,888
4,669,988
Currently I am using ([0-9]{1}(,?[0-9]{3}){1,2} which fails in first three scenarios.
Use this one:
[0-9]{1,3}(,[0-9]{3}){0,2}
To validate an integer from string (you have to remove ,):
try {
Integer.parseInt(str.replaceAll(",","");
//valid integer
} catch (Exception e) {
//not valid integer
}
try this regex
"\\d{1,3}|\\d{1,3},\\d{3}|\\d{1,2},\\d{3},\\d{3}"
\d{1,3}(,\d{3}){0,2}
Try this regex along with number validation for a length check.
public boolean isNumValid(String num) throws ParseException {
if (!(NumberFormat.getInstance().parse(num).intValue() > 9999999)) {
if (num.matches("\\d{1,3}(,\\d{3}){0,2}")) {
return true;
}
}
return false;
}
