Got a question for some of the more web savvy guys out there.
We've got a tree-like structure in one of our apps, this is a web-
based application, off the intranet at work.  Anyway, we got this tree
and we have some keyboard accessibility.  Mainly, you can traverse the

Do methods that don't modify Swing components have to be called from the
EDT?  Methods such as JTextField.getText(), JCheckBox.isSelected() etc.
Thanks,

Is there some way for an object to get notified when
a JFormattedTextField commits?  I tried doing a
getDocument() and setting a DocumentListener,
but that gets called during intermediate

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When programming with GTK+, I'm accustomed to grouping related
widgets by putting them in a GtkFrame, which draws a box around
them and optionally shows a text label.  There's an image of
one (empty) on the GtkFrame documentation page:

<blockquote>
<pre>
[code]
         // webAddressBox IS OF TYPE javax.swing.JComboBox

I've got a JTextPane in a JScrollPane, which I'm using to let a user
display/edit some assembly source code.  I definitely do not want word
wrap.  If I override getScrollableTracksViewportWidth() to return
false, I don't get the word wrap.

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Is there any existing free[*] component using Swing (or AWT) that is
good for a source code display pane, with features like line numer
display, and setting/showing breakpoints in the left margin next to the
source line?

Does anyone know where I can get some common images in png format
free? I never know where to find such things.
thanks
Lionel.

i am creating an application on image processing and i want gui
interface for my application and when i am implementing open function
in filemenu iam facing problems in rendering images into my work area
plz help me

I have a frame with several splitpanes or panels.  In general those
are navigation orientated - tab, arrow up, arrow down, click etc.
Whenever a user starts typing letters I want to place focus into a
particular (default) field.  Of course if you are already in a text

I'm writing a simulator for the trivial computer defined in Appendix C
of _Computer Science: An Overview_ (9th Edition) by Brookshear.  The
computer has 256 bytes of memory.  In my simulator, I have a Memory
class that represents the main memory, and which supports a

When I profile my swing application I notice that after each tidy up my
image container (add,remove IconImage objects to a hashmap), there
gather by and by surviving objects. This leads to run out of memory
after a while.

Should this be a problem:
My program can operate with several windows (maybe up to ten), and they
basically all have the same status and functions. For example, a window can
be closed, and from a window also other windows can be opened or closed.