Tagged with arrayindexoutofboundexception: -1 - Processing 2.x and 3.x Forum https://forum.processing.org/two/discussions/tagged/feed.rss?Tag=arrayindexoutofboundexception%3A+-1 Sun, 08 Aug 2021 19:16:42 +0000 Tagged with arrayindexoutofboundexception: -1 - Processing 2.x and 3.x Forum en-CA array[x-1]? https://forum.processing.org/two/discussion/10810/array-x-1 Thu, 14 May 2015 17:51:09 +0000 SimCrafterXL 10810@/two/discussions Hi there, I have a question, I have an array, and a variable x. I want to know the values before and after x in the array. But I have no clue how to read in the value before x. I have tried two opportunities:

x--; if(rotarray[x][y] == true) return true; else return false;

and

if(rotarray[x-1][y] == true)

but both failed with "ArrayIndexOutOfBoundException: -1"

I am using Processing 2.2.1

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