servlets - Set/Get Objects from HttpSessions (Java) -

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i set object httpsession. object instance of class user. then, in class i'm trying this:

user user = session.getattribute("userobject");

i read serializable can't understand how works. there direct , easier way this?

imagine session simple, type-unsafe map. can put in it, , can take out, provided know type expect. so, if have put user object, use:

user user = (user) session.getattribute("userobject");

if have put long (the userid)

long id = (long) session.getattribute("userobject"); user user = getuserbyid(id);

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