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Newbie help w/2-D Array and GUI

Bruce Laker

Joined: Nov 16, 2012
Posts: 2
Im using Netbeans to create a program/project for school that takes user input from two text fields, stores it in an array. I have created the GUI and Array but get errors when defining the on-enter event.

Here is the array definition:

And here is the textfield retrieval:

Looking forward to learning more. Thanks for any help.
fred rosenberger
lowercase baba

Joined: Oct 02, 2003
Posts: 11955

Bruce ofBruce wrote:I don't know how to post code on this forum but will try.

Here you go: How to post code.

You may want to also read our FAQ on How to Ask Questions on this site.

There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
Phil English
Ranch Hand

Joined: Jun 18, 2012
Posts: 62

To locate a point in a 2 dimensional space you need two coordinates. When you reference a point in your array you only use a single index this returns a slice (1D array) not a point.
dennis deems
Ranch Hand

Joined: Mar 12, 2011
Posts: 808

I think this coding style is ill-advised. Why embed the incrementing of a variable -- a significant event by any standard -- within an array access instruction? Your intent is not entirely clear. Can you tell me the value of i when the array access occurs?

When incrementing a variable, do so in an instruction that contains nothing else but incrementing the variable, unless there is a compelling and immediately comprehensible reason to do otherwise.
Bruce Laker

Joined: Nov 16, 2012
Posts: 2
I figured it out. Disregard my question.
Campbell Ritchie

Joined: Oct 13, 2005
Posts: 46362
Well done solving it. How did you do it?
I agree. Here's the link:
subject: Newbie help w/2-D Array and GUI
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