If I have x number of properties, all of which have public getters and
setters methods, is it a good idea to have a
firePropertyChange(fieldName, oldValue, newValue) method inside those
individual setters?

Having built several Java swing applications in the past, I am well
aware of the potential for problems if you update a Swing component on
a thread other than the AWT thread.  Knowing this, I have been careful
to use Runnable + SwingUtilities.invokeLater (or

JFileChooser  - Display Dirs and Files Greyed out and allow only Dirs
to be Picked
Would like to be able to use JFileChooser to select only Dirs, but
still show the files greyed out.

Is it possible to access the BasicInternalFrameTitlePane.CloseAction and
other actions without subclassing.  I have a corresponding JButton that
when right click should show the popupmenu associated with the
JInternalFrame's default 'system' popupmenu.

I'm using JAVA SDK 1.4.
I've a problem with MenuBar in a JFrame.
The frame's layout is BorderLayout and a has a JLabel in the SOUTH and
JPanel in the CENTER.

I am new to Java but not new to programming. What in your opinion is the best first book
for Java? I'd like something that has a good section on creating Windows, Applets and
Swing. Source code on a CD or website for all examples would help.
Thanks.

I have a Windows application that accepts a certain custom clipboard
format.  I have a Java application that needs to be able to place data
of that format on the clipboard.  The Windows clipboard format number
is 49156 and the name of this format is "Native."  I've been able to go

Hello I have created a simple java applet which is supposed to present
4 radio buttons that do nothing at all.
here's the code :
import java.awt.*;

I have a JTextArea within a JScrollpane, and this outputs a constant log
from my program.
However the default action seems to be to constantly view the top of the
log, wheras I whish to look at the bottom of the log, as this is where I

I am trying to learn the proper gui coding style.  Does anyone know
which class in the javax.swing package has the best coding style?
Some classes separate the constants into an interface but some don't.
Some do this and some do that, etc.  Hence, I'm confused as to which

i have a gui application that instantiates a JFrame from another JFrame
and i want to be able to send some kind of return value back to the
original JFrame indicating what was done in the new JFrame. for
instance, the original JFrame connects to a server and displays

I have a need for a custom cell editor that consists of a text field
and an adjacent button.  So I created one out of a jpanel with a
JTextField and a JButton in it.  When the JButton is clicked it fires
an event that I can catch.

I have a JPanel inside a JFrame which I would like to "auto-hide", a
feature similar to the task bar.
The following is a sample code which is suppose to auto hide the JPanel
when the mouse enters it.

I am wanting to input an IP Address (xxx.xxx.xxx.xxx) in a
JFormattedTextField. We have tried using a MaskFormatter, but if the address
does not have 3 digits in each field it is rejected. I am fairly new to
Java, so suggestions on a better approach to performing this task would be

How can I get a tool tip spanning multiple lines?
Can I use HTML in tool tips?
Thanks in advance.