How to display my application's errors in JSF?

Question

In my JSF/Facelets app, here\'s a simplified version of part of my form:

Answer 1

Remember that:

FacesContext context = FacesContext.getCurrentInstance();
context.addMessage( null, new FacesMessage( "The message to display in client" ));            

is also valid, because when null is specified as first parameter, it is applied to the whole form.

More info: coreservlets.com //Outdated