This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
I need a help to create a regular expression to validate telephone field with Struts Validator. The regexp should be very simple: 4 numeric digits, a "-" char, and again more 4 numeric digits. Ex: "3131-3131".