EDIT - added at then end of the post the answer we were able to achieve This is my first post in SO, so i hope i can ask everything right! I searched and didn't quite find a answer to my question...

here's the code that i have on how to limit the character input length class JTextFieldLimit extends PlainDocument { private int limit; // optional uppercase conversion private boolean toUpperc...

I figure this must be a simple mistake in the code or a misunderstanding on my part, but I cannot get a DocumentFilter to detect insertString events. Below is a simple filter for upper case letters...

I've implemented a DocumentFilter subclass, and when I type text into the JTextComponent, the replace() method of the filter is invoked, and not insertString() (which is never invoked). Any idea wh...

I am using a DocumentFilter on a JTextField which is used to enter in the amount of time an employee has worked. the filter is to ensure that the limit of input is only 4 characters long and to onl...

I want to have a method like this on my DocumentFilter public void replaceUpdate(int offset, int length, String text) { try { super.replace(byPass, offset, length, text, null); } catch (BadLoca...

Qestion First: I need to regex to match 111 or 111. or 111.111 (just aritrarty numbers) for a DocumentFilter. I need the user to be able to input 111. with a decimal and nothing afterwards. Can't...

How to limit the number of characters entered in a JTextField using DocumentListener? Suppose I want to enter 30 characters max. After that no characters can be entered into it. I use the followin...

I'm trying to create a math quiz and I only want the user to be able to enter numbers whether they're negative or positive. Is there any way to do so? I've thought of using Regular Expressions but ...