I'd like to have a transparent window (to do some processing on the
image below the window layer, think of a magnifier glass).
Do you have any suggestion about doing that?
(A way of doing so would be to take a screenshot and blitting the

I need to turn a series of icon images into black & white equivalents
programattically in a paint method.
I'm starting with roughly circular images which are colored within and
everything outside of the circle is transparent.  The transparency

I've found some ways to have a window in Windows be always on top
through JNI, but I am looking to have an app have the windows always
on top under Solaris. I'm running JDK 1.4, and no, I can't upgrade to
1.5 due to other applications.

I have developed a simple application using swing. Now i want to make
it as a plugin in Eclipse.
Can anyone tell me how can i do this? As i dont know much about plugin
development.

Is it possible to program in SWT without using Eclipse? Can I just use
the command line java and javac?

For several years, I've been displaying marked up DNA and RNA in a
JTextPane. It's worked great. I can mark up interesting substrings
with different fonts or background colors and it wraps like you'd
expect -- at the edge of the component.

Yes, I know that a question like that cannot really be answered.  But I
brand new to java GUI design, and I am confused by all the options out
there for a decent GUI designer.  Worse, most of the info I have found on
the web is dated.

I have a DefaultMutableTreeNode that sometimes collapses on certain
hardware (like a trackball) when the mouse hovers over a child node in
my JTree.
How can I lock this one single node from collapsing? It's a root node

Say I have the following code:
JPanel myPanel = new JPanel(new GridBagLayout());
GridBagConstraints constaints = getConstraints();
myPanel.add(new JLabel("Hello world"), constaints);

I have a problem when running my app under MacOS X. I have a panel in
which the user can resize and move graph objects. For this I am using
the D&D API. Everything works fine on Windows but on MacOS X I get a
rectangle during the d&d operation of the panel where the

 i'm developing a java application that let the user to setup and
 simulate physical experiments. I want the user to be able to place force
 arrow in a diagram and then start the simulation. My problem is that i
 can't find a canvas that let me place things like arrow, circle ...

Then I have a result set named rs. I need that one column of ResultSet
rs will be in an array.
I've read about method getArray(), so i've thinked that my code will
be something like that:

I recently saw a thread about the Swing EDT in the CLJP, and it made
me wonder whether my general game architecture was thread safe or not.
EDT, and threading in general, are one of my weaker points in Java. Is
this general design okay? Are there things which I've put into the ...

I thought my method would handle this dynamically, but I was way off:
[code]
      /**
        * Handle {@link javax.swing.JButton}

This is e real newbie problem.
I created a JPanel :
public class P1 extends JPanel implements ActionListener {
                           some code