I've created an application that uses 4 text areas, imported from java.awt.TextArea, to read and update elements from an xml file.

I've tested it with a few colleagues and the issue I'm running into is this:

The text areas are added inconsistently when the program runs. That is, on both my and my friend's computers they're added every time. On 3 other people's computers (we're all running OSX) the areas often don't appear, or only 1 or 2 appear instead of all 4, and if they keep closing and running the app again all 4 will eventually appear.

This happens whether the program is run from processing directly or through the exported application.

===

I use the following code:

import java.awt.TextArea;
//...
TextArea ta1,ta2,ta3,ta4;
//...
void setup(){
 //...
 ta1 = new TextArea("·",7,31,1);
 ta2 = new TextArea("·",7,31,1);
 ta3 = new TextArea("·",8,31,1);
 ta4 = new TextArea("·",8,16,1);
 this.add(ta1);
 this.add(ta2);
 this.add(ta3);
 this.add(ta4);
 //...
}
//...

Does anyone have an idea as to why the textareas appear only occasionally on some computers and always on others?

at the top of the page, type "textarea" into the search box. you'll find several posts about why this happens.