JSF redirect to another page

[Andus Chan]

Hi,

I'm new comer in JSF. I found there are 3 kinds of method in Backing Bean to redirect to another page.

1st:

return "/home?faces-redirect=true"; 

2nd:

FacesContext fContext = FacesContext.getCurrentInstance();
ExternalContext extContext = fContext.getExternalContext();
extContext.redirect("http://hostname/TEST/home.jsf"); 

3rd:

FacesContext fContext = FacesContext.getCurrentInstance();
ExternalContext extContext = fContext.getExternalContext();
extContext.redirect(extContext.getRequestContextPath() + "/home.jsf"); 

What are the differences in the server side or client side for these 3 methods?
Can the same session be shared after "redirect"?

Thanks in advance!