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  Cant place "rock" at enemies position. (Getting NullPointerException) FIXED  (Read 2282 times)
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Offline GlennBrann
« Posted 2013-02-03 22:21:18 »

Could someone delete this post. Thanks
Offline Agro
« Reply #1 - Posted 2013-02-03 22:24:58 »

Assuming that's the most direct exception error, apparently c is null. Smiley It might go into the constructor of the object Shit, but I can't tell from what you gave us.

Offline GlennBrann
« Reply #2 - Posted 2013-02-03 22:26:17 »

what files would i need to give you to get more help ?
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Offline sproingie

JGO Kernel

Medals: 202

« Reply #3 - Posted 2013-02-03 22:41:09 »

It feels to me like the very first thing you do on seeing a runtime exception is to run to the forum to post urgent pleas for help, getting others do to all your debugging for you.  NPEs are a very basic class of exception with very a straightforward procedure to debug them.  Find out which reference is null, then find out why it was not set.  

You need to show you did at least some basic investigatory work first.  Start by paying attention to the line numbers in the traceback and looking at those lines.

Offline GabrielBailey74
« Reply #4 - Posted 2013-02-03 23:07:08 »


Offline zngga
« Reply #5 - Posted 2013-02-04 05:06:33 »

At least you followed Pro tip #64, haha!

You need to look at the stack trace for the exception and find out where the problem occurs, add print statements if needed to discover why / what went wrong.

My code never has bugs... it just develops unexpected features!
Offline Alan_W

JGO Knight

Medals: 8
Projects: 3

Java tames rock!

« Reply #6 - Posted 2013-02-04 06:19:20 »

Probably you've called 'addShit'  persecutioncomplex before defining x, y, or sprites.  One of those will be null.  If you can't work it out from the exception, add some println statements in for debugging to check for null values. 

Time flies like a bird. Fruit flies like a banana.
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