I'm writing a small program for my own use and I've run into a problem I
don't completely understand.  I don't have a lot of experience with Swing
and it is a big API, so please forgive the simplicity of the solution that
I'm sure exists.  

I'm trying to use JAI to create a thumbnail of a JPEG and no matter
what I do, I keep getting the following stack trace:
exception
javax.servlet.ServletException: All factories fail for the operation

I've got a JApplet that is having a focus problem.  The URL is
http://www.knutejohnson.com/chat.html.  After you hit the 'Connect'
button and enter a handle the focus should transfer to the outgoing
message JTextField.  This works fine under Winblows but under Fedora 7

I have a small sample problem that replicates my problem. The program
creates a window with a text field that has keyboard focus.
The window has a menu item that I use to create another window of that
type that correctly gets the keyboard focus.

Hi need some help please! I have designed a GUI that contains 12
JButtons. At the moment when you click on one of the buttons a message
box comes up saying which one you clicked.
What I want to do is one of the buttons will contain treasure e.g.

I have noticed a big performance hit if I call drawImage(image, x, y,
width, height, null) and the image is a BufferedImage.
I need a bufferedimage because I am creating a gray image off another
Image. So I call :-

I am trying to repaint a component that displays a buffered image when
the component is scrolled. I get the following error:
    [java] java.lang.NullPointerException: NullSD does not handle
this operation

I know Microsoft has teleconference software, can
do tele-presentation, demo
But I prefer do things simple
I am thinking use java.awt.Robot class do