use JSF converter, you can add a4j support to display converted value with onkeyup or onblur event!
hey LMK i want to restrict the user to enter the valid data just like we enter IP address in configuration validation is done after submitting i want it the user cannot enter wrong help in this Regard is highly appreciable.
what u search is a feature called "MaskedInput" right?
I have two links for you:
imask is very powerfull but requires MooTools ... will not work with rf.
masked-input is simple to use: