A.javax.servlet.CookieB.javax.servlet.http.CookieC.java.servlet.http.CookieD.java.servlet.Cookie
A.Set-Cookie;user=itcast;Path=/B.Set-Cookie user=itcast;Path=/C.Set-Cookie:user=itcast;Path=/D.Set-Cookie:user=itcast Path=/
A.String setPath(String pattern)B.void setPath(String pattern)C.void setDomain(String pattern)D.String setDomain(String pattern)