Difference between request.getSession().getId() and request.getSession(false)?

Question

What do these calls actually mean in terms of session?

System.out.println(\"print1: \"+request.getSession().getId());
System.out.println(\"print2: \"+request.get         


        

Answer 1

request.getSession().getId();

this will return the id of the an existing session.

Request.getsession(false) 

it will return the session if it exists, or it will return null otherwise.

and Request.getsession(false) means : give me the session if it exists, otherwise do not create a new instance (and thus return null).