JSF invalidate session

After user logged in , he will do the logout for the current process

• Actually what will happen in  logout process is clean the current session
•  So the user cannot access any page 
• We can invalidate the session by following method in JSF

Home page xhtml is

<h:commandLink  value="#{menu.getName()}" action="#{loginBean.logout}" ></h:commandLink>

• When we click the commandLink the below method will be invoked

Bean class is

public String logout()
{
           FacesContext.getCurrentInstance().getExternalContext().invalidateSession();
        return "Login?redirect=true";
}