determining if a string is null

From: Gary N. (gary.newell_at_nospam.intel.com)
Date: 11/22/03 

Date: Fri, 21 Nov 2003 16:43:12 -0700

Is there an easy way to determine if a string is null?

String a = null;
a.equals(""); // doesn't work

FAQ or suggestions welcome.

Thanks!

Gary