Hello, I am new to JSF and such libraries as BootsFaces.
You don't "get" values when you use JSF. JSF gets them for you and puts them in the backing bean automatically when the form that contains the control is submitted.
That's assuming that each and every control on the form has a valid value. JSF only updates the backing bean if each and every control on the form that was submitted has a valid value.
If you only want that one control's value to update the backing bean, you can make it an AJAX control. What AJAX actually does is submit just selected field(s) from the form. They're still subject to validation, but here again, JSF does the "get" for you.
When it comes to destroying a civilization, gas chambers cannot hold a candle to echo chambers.