Anyone know how to sort nodes in a Jtree?
I dont want to subclass defaulttreemodel
Thanks

Is it possible to make an event and fire it when an object is changed(a
attribute)?
For an example a object where the instacevariable speed is changed via the
setSpeed method.

I have a lot of experience in two areas: desktop database design, using a commercial RDBMS package (not Java);
and Java back-end stuff (servlets, JDBC, etc). Now I'm developing a Java GUI database front end and am somewhat
frustrated by my lack of familiarity in the area, and I'm ...

I am having big troubles updating a JTable. The problem exists in two
different occasions which I will describe below.
In the first case I have a JTable that does not update properly when I
insert new data into it. It's a simple table, and I keep the data

I'm doing a plugin for another program.
Within that program I declare the start class where the program
will search for a specific static function. I declare it like
this: mypackage.Myclass

I am doing some research into the best development environment to write a cross-platform application which will be effectively
a 'shrink-wrapped' app, one which installs simply and contains everything it needs out of the box. I'm keen on using Java to do
this (there are a number ...

I'd like to make two JButtons rollver in sync.  That is, when I mouse over
one JButton and it rolls over, I'd like the second one to also rollover.
Likewise, whenI mouse over the second button, they both shoudl again
rollover.

I have a Jtable with single width header, but i want multi width header.
I don't know how to do it.
For example:
I have this

I'm pretty much a newbie to Java printing.  An application I'm writing
has a number of JFrame-descended objects, which I pass to the
constructor of ComponentPrintable, shown below.  Each JFrame contains at
least one JPanel descendant, and inside the JPanels a number of JPanels,

Here is my problem : I make a accessory for a JFileChooser which need
to close the JFileChooser after a button click.
But I can't success in it, I try to make a hide() (inside my
accessory) but the application locks, (I can still close my

I am trying to set up a Java destop application GUI that has
components evenly spaced in a grid arrangement.
I was able to design something very nice looking with GridBagLayout.
See this link...

I have tried to implement a function wih JTextField for several weeks
and have no success.  If anyone can help me or point me to right
direction, you are appreciated very much.
I try to use a JTextField as a command input.  Every time the user

I have a button that calls a new JFrame.  I need to ensure that only one
JFrame is created at a time.  I need to prevent the user from hitting the
button a second time and creating a second JFrame.  I have two known
options:

Hello java gurus
i am having a difficult problem with updating of my GUI. it is controled by
the radio buttons in the top panel. problem occurs when i click on other
button (fime)..as it garbles the whole canvas by superimposing the variable

I'm searching for an example of a Treemap (or Strip Treemap) to
arrange rectangles in another rectangle, see example on:
http://home.datacomm.ch/w.nussbaumer/boxes.jpg
Thanks for any help,