On Thu, 20 Mar 2003, Carsten Ziegeler wrote: > > Stephan Michels wrote: > > Hmm, I'll think that I'm not the only one, who went into the trap. You're > > right returning a null validity hurts the contract, this will cause an > > exception. But a NPE in isValid() doesn't help searching the problem. > > > Yes, but adding it in add().
Right, then you can see where the problem lie with help of the stacktrace. Stephan.
