I need open source/free java graph layout libraries, that will enable
me to draw graphs and apply clustering type of layout algorithms to it
and also write code to interacte with graphs.
I have been tried JGraph so far, but your valuable inputs will be much

At this time, I develop generic JTable et TableModel compenents. I would
like put some validations rule. Where do I have been put the code ? Into my
tablemodel or jtable object ? How can I do that ?
Wich is the best practice in OO development ?

I would like to put together an article or FAQ concerning the necessary
steps for ensuring that a Java application retains usability and blends in
properly on different platforms - with Mac OS X specifically in mind. I
wrote a post about this on openusability.org, see

Sorry, this is a bit of a shotgun. But I've recently moved to a new
linux platform (to Mandrake 10.0 from RedHat 9).
Now, ALL java apps (sourcejammer, jedit, etc) that I use seem to have
extra large line heights... meaning there is large spacing above and

            Hello all, I am trying to create an "Email Form" and whenever I try to compile the code, listed below:
JPanel panel2 = new JPanel();
                       l4 = new JLabel("The email information you entered is");
                       tf4 = new JTextField(50);

I'm making some JButtons with both images and text in it. Now, the text
appears next to the image. But I would like to show the image underneath the
text. How can I do this?
thanks in advance

i am not used to java programming
but have the license SCJP
today i try to edit a GUI program to run simple window
i have knew that the simple window needs a Frame Class (included java.awt.*)

I'm having some Swing problems with a subsystem of an open source project and
request some help.
The problem is this: I have a component, HTMLPane (
http://cvs.sourceforge.net/viewcvs.py/sillyview/sillyview/src/net/sourcefo

I need 4 tiny icons to represent the questions: who, when, where and
what.
I have a tiny person for who, a planet earth for where, a calendar day
pad for when, but I am stuck on what .  I currently have a note pin

I've written a custom Swing component that extends JPanel.  It is
nested inside another JPanel through the use of a Layout.  However,
after adding the custom component to its parent, nothing is displayed.
But, if I resize the main window, the custom component appears.  It

I am trying to calculate the location of a point in a plane given a
start point, a distance and an angle. I can't remember enough geometry!
So if I have a point x,y and a distance of d and an angle of a where:
x,y = 100,100

I'm documenting a suite of Java applications. As part of the work, I
review all messages, labels, forms, and other user-visible text for
spelling, grammar, and sense.
This release I was sent a list of messages form the tools, but have

Helloooo
What is the best way to draw a background image for each form? (JFrame). I
have
done it overriding the paint method and drawing the image there, then

I am implementing a Swing application, which is to run both on Linux and
Windows front-ends.
On Windows the program fires up in 5 secs (Sun Java 1.4.2), on an only
slightly slower Linux machine it takes 40 secs (Blackdown 1.4.2).

Is there a way of getting the current row that the caret is on in a
JTextArea?
Or do I need to write my own Document?
Thanks