I created JTable with JRadioButton in 4 columns of table.I have Implemented Renderer and Editor. My Requirment is something like this
Only one radioButton can be selected in each row. Which works if i put it in Group.
if i selected RadioButton at (0,1) then if i select RadioButton ...

                 I have a jtable and i need a way to be able to merge
or to split the cells(both the rows and columns) selected by the user.
I have seen the table model and jtable apis' and there seems to be
nothing about this. I would appreciate it if someone could show me any

I have a program that creates JInternalFrames which are located inside
one half of a JSplitPane. The JInternalFrames contain a JTable. I
would like that each JInternalFrame is sized in a way that it just
fits around the included JTable. Attempts with setPreferredSize() (as

how it's possible to populate a jtable in netbeans?
help please
tank's

Does anyone know how to get an Action Listener to open a new content pane or
change the contents of the current one when a menu item or button is
selected?
Tom

I have created a custom double-line button and overridden paintComponent().
This works fine but I've got one wee niggle: if the layout manager
squashes the button below the width returned by getPreferredSize(), my
text spills into the insets, i.e. occupies the full button width.

I've got a JPanel on which I draw GeneralPaths.
As it's a bit too complex sometimes,
I'd like to clean the JPanel on which I draw
before I draw a new GeneralPath...

I wanted to use the class XYConstraints.  I found the .class file in a
folder and copied it into the same directory as the main class in my
program, but the compiler doesn't seem to find it.  How can I include
it in my program?

I've been getting into Java recently and I'd like to know if anybody can
recommend a lightweight IDE that I can use alongside a conventional text
editor to handle GUI or other API tasks.
I've downloaded the free version of JBuilder from Borland's website, but

Forums:
http://forum.java.sun.com/forum.jsp?forum=427
http://forum.exadel.com/viewforum.php?f=11
General clearing houses:

                 I am trying to center a page number on the bottom
center on a printed page but i am having some trouble doing it.
I am using the windows default page dialog where the user can select
the desired page size(ie, a1,a2,a4) but i am unable to center the page

I am trying to design a grid where every cell in a given column is the
same width, but the leftmost column is twice as wide as the other
columns (which are all the same width).  However, when I try using
gridwidth = 2 on the first column and gridwidth = 1 on the others

How do I convert the Color object to string in HEX?

I would like the user to select only one color and my codes should
devise the selected color to break it into 2 colors, one being lighter
than the other so that I can create a gradient fill.
How can I go about doing that?

I haven't done too much Swing programming in a while and I didnt
normally throw away panels within Frames, so was wondering
if someone had the right answer for the following.
I have 1 frame that contains several panels.