How to parse numbers more strict than what NumberFormat does in Java?

Question

I\'m validating user input from a form.

I parse the input with NumberFormat, but it is evil and allow almost anything. Is there any way to parse number more strict?

Answer 1

Take a look at DecimalFormat that is a subclass of NumberFormat http://docs.oracle.com/javase/6/docs/api/java/text/DecimalFormat.html

DecimalFormat myFormatter = new DecimalFormat("###.###");