I have a textField in my application which will be initiated programmatically (textField.setText() ) when user clicked in an item in JList. later user will change this value manually. I get stuck ...

I want the message box to appear immediately after the user changes the value in the textfield. Currently, I need to hit the enter key to get the message box to pop out. Is there anything wrong wit...

So I got know this is a popular question and already found the solution. But when I try this it doesn't work properly. My JTextField is empty and the button isn't enabled. When I write something i...

I would like to add a kind of listener to my JavaFX's TextField which when ever a user changes the value of the TextField, the Application prints something on the console. I've searched and i find ...

I'm trying to call method after changing text of JTextField. textField.getDocument().addDocumentListener(new DocumentListener() { public void changedUpdate(DocumentEvent arg0) { System.out.p...

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 have been working on a personal project to get better with programming. My goal is to make it much more robust, I am just starting. I am a current computer science student. Anyway, I am working o...

I have created some textfields from which i want to use the user-input. I have read that i should use a documentlistener, but i have some difficulty implementing it the right place i think. In th...

I'm developing an application where I want something to be triggered both by the user updating the contents of a JTextArea, or manually via pressing a JButton. I have done the first part using a D...