Listener « JTextArea « Java Swing Q&A

1. In Swing, what is the best listener to use in a textarea    stackoverflow.com

I am trying to change the font of the text in a textarea in Swing. Which listener should I use on textarea to trigger an action that lets the program initiate ...

2. java.lang.IllegalStateException while using Document Listener in TextArea, Java    stackoverflow.com

DocumentListener dl = new MessageDocumentListener();
((AbstractDocument) nboxArea.getDocument()).setDocumentFilter(new DocumentFilter() {
    public void insertString(FilterBypass fb, int offset, String string, AttributeSet attr) throws BadLocationException {
        ...

3. JTextArea as listener for log4j Logger    stackoverflow.com

How can I set up a JTextArea to receive anything that I log (short of creating an interface such as "MyLoggerListener" and implementing it into my JTextArea) EDIT: I fixed this problem by ...

4. itemStateChanged and actionPerformed issues    stackoverflow.com

I have a handler class which implements ActionListner, FocusListner, and ItemListner. I have instantiated a gui object from a ConfrenceGUI class:

      public ConferenceGUI()
   ...

5. Adding a textarea in an action listener    stackoverflow.com

Can anyone help me how to add a text area into an actionlistener when using Jmenubar. I ve a menubar, but i need some text to display in the same window, ...

6. problem in the two listener with in the textarea    coderanch.com

hi all i am working on a ui component in which i have textArea which has some coded chareters like yen, degree and many more which r coded like this <> , <>, ......like that i have to treet these coded strings like a single character so when i press the cursor inside <.....> it automatically to end of this string ...

7. Which Listener to use for JTextArea    coderanch.com

import java.awt.*; import javax.swing.*; import javax.swing.text.*; class Testing extends JFrame { public Testing() { setLocation(400,300); setDefaultCloseOperation(EXIT_ON_CLOSE); JTextArea ta = new JTextArea(new CharacterLimiter(20),"",5,10); ta.setLineWrap(true); JPanel p = new JPanel(); p.add(ta); getContentPane().add(p); pack(); } public static void main(String[] args){new Testing().setVisible(true);} } class CharacterLimiter extends PlainDocument { int maxChar = -1; public CharacterLimiter(int len){maxChar = len;} public void insertString(int offs, String str, AttributeSet a) ...

8. Regarding listeners in textarea    coderanch.com

Hi, I am working for creating help page. After search is done, i get the required texts which are placed in Jtextarea. On clicking each text, respective information page should be displayed in JEditorpane. Please help me in knowing which listener i can use to click each text. I have used document listener but not performing what i require. //Adding document ...

9. Event Listener for JTextArea?    coderanch.com

I don't think that communicating via an I/O stream is the best design. For one thing, as soon as you decide you need to have two objects getting data from a single information source, you're stuck because they can't both read the same data from the stream. That's what just happened to you, in fact. Since you're using Swing you will ...

10. how to use paint in document listener event in jtextarea    coderanch.com

11. JTextArea's KeyListener' overloaded method works only once... what can be a problem?    java-forums.org

I think you are going to have to post an SSCCE that demonstrates the problem, as this may not be enough information to deduce the problem. Further, while its not clear what your goal is with the KeyListener, a JTextComponent has other means through which to track user changes which might be more appropriate and flexible (DocumentListener, CaretListener, custom Document, etc...) ...

12. JTextArea Listeners    forums.oracle.com

Hi all, I am really stuck in a problem I have, the problem is if I changed the contents in a JtextArea and then select another node (in a Treemodel), how can i get java to recognise that ive changed the contents in the JTextArea. thanks guys Message was edited by: El_Diablo

13. JTextArea does not work with KeyListener. Help, plz...    forums.oracle.com

Wow, I have tried every type of Listeners and couldn't get this thing running. I can't believe I made that simple, yet hard-to-find mistake. I have been reading a lot about this problem, which by the way, tons of people have, and I thought maybe it's a bug. Thanks a lot. You're a genius and a life saver. Thanks for the ...

14. JTextArea: which Listener do i use?...    forums.oracle.com

15. KeyListener in JTextArea    forums.oracle.com

Dear all, I want to put a KeyListener for SHIFT + ENTER (VK_SHIFT + VK_ENTER) for my JTextArea, but seems like it is not working. This is what I have done : newMessageArea = new JTextArea(); newMessageArea.addKeyListener(new KeyAdapter() { public void keyTyped(KeyEvent e) { if(e.getKeyChar() == (KeyEvent.VK_ENTER + KeyEvent.VK_SHIFT)) JOptionPane.showMessageDialog(null, "Here"); }}); Can you please let me know what's wrong or ...