I intend to create a few custom components and then place them together in a
frame along with other normal things like buttons, labels etc. to become my
Graphical User Interface.
How can I set the background color of the JFrame or how should I be putting

I have a problem, I can't find any API to copy aplha from one BufferedImage
to second, I can do it in loop with get/setRGB but it's very slow. Any help?
Piotr

 I have 2 Jlist
- each one in a JscrollPane
- each JScrollpane is in a Panel
- each Jlist has its SelectionListener

I've a JTable and I want to rendered the cell with different java
component basing on the class of the value to rendered.
So I've create a class that implement  TableCellRenderer,
and in  getTableCellRendererComponent method I select

I wonder if there's something like a onGainFocus() event in Swing if the
window my application is using gets the focus?
Background: I use my own BorderFactory and borders and when my app looses
focus and regains it everything is repainted correctly in my JFrame but the

Hi gurus :-)
I am working on the final homework assignment for my intro Java class,
and I am in need of advice (*not code!*) on designing the interface of
the program.

Does setForeground() and setBackground() automatically call
paintComponent?
I had put some code setting them in paintComponent() thinking that was
a logical place, but ran into a situation where paintComponent was

Hi Group,
I'm trying to tell the user that they have the caps-lock key down when
entering a password.
From what I've seen, getLockingKeyState() is the function to use for this,

Can anyone help me out here:
Im producing an image on a JFRAME by using a JUNG library
(jung.sourceforge.net).
Im hoping to dump this picture out on HD as JPG or PNG.

I have been trying to create a GUI placing Jbuttons and JTextFields where
I want them using the .setBounds method but seem to have no luck - they
just get shoved on in the order they are created like I was using a flow
layout (I have not declared any layout). I am adding the buttons ...

If I am given a jpg of a map and a number of GIS co-ordinates, any
ideas on how I can go about plotting those coordinates on the jpg ?
Further, if I had to draw a line between two GIS co-ordinates - any
ideas on how to do that ?

is there a (third party) layout manager around which acts exactly like a
HTML table?
I.e. it enlarges cells depending on its contents and allows width and height
attributes in absolute values as well as percent and organizes its content

Hi, i want to change the color of specific words, in a JTextpane, without
changing the rest of the text, is this possible if so how would i go about
doing it,
I will have an array of words which i want to match against and then the

Someone knows what's the purpose of the function createframe() and
createwindow() of Toolkit, and how to use it?
--
Emmanuel

I want to place several kinds of JMenuItem s into a menu bar. All
instances e.g. MyCheckBoxMenuItem are derived from MyMenuItem which in
turn is derived from JMenuItem.
To simplify the example, the custom menu item is derived directly from