Figure 7–1 shows a typical login form in which a user enters a user name and password, then submits the form by clicking the Login button.
<h:form> ... other JavaServer Faces tags and other content... </h:form>
The h:form tag can also include HTML markup to lay out the components on the page. Note that the h:form tag itself does not perform any layout; its purpose is to collect data and to declare attributes that can be used by other components in the form.
A page can include multiple h:form tags, but only the values from the form submitted by user will be included in the postback request.