Java textfield decimal validation

Question

How can I validate user input contain only 5 digits with 2 decimal. I am using below code to check 5 digits, but how to check 2 decimal.

if (!id.equals("")) {
        try {
            Integer.parseInt(id);
            if (id.length() <= 5) {
                return true;
            }
        } catch (NumberFormatException nfe) {
            return false;
        }
    }

Answer 1

The DecimalFormat class will help you significantly with this. You can check that the user-input can be parsed according to a specific pattern.

The commons-validator library wraps this up in a convenient method call.