Hi Uli, yes, you are probably right. BTW: This seems to be related to a new HashMap implementation in Java 8. In my environtment (with Java 7), the compareTo() method is never called which could explain why nobody else has reported the problem. Gerd
Date: Thu, 6 Nov 2014 00:58:06 -0800 From: ulibaer@gmail.com To: mkgmap-dev@lists.mkgmap.org.uk Subject: Re: [mkgmap-dev] NPE with mkgmap 3344!
BTW: Since there is a check against City object being null before the compare method:
// TODO: look at what this is doing... if(city != null && other.city != null) return city.getName().compareTo(other.city.getName()); <--- Here happens the NPE if (hashCode() == other.hashCode()) return 0;
I suspect the getName()-function from City object to return <null> in some cases. I'm @ work right now and can't explore, but i remember City.getName() checking for Label != <null> but then calling Label.getText(), which does *not* check for <null>.
Best regards, Uli
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