I'm not entirely sure whether the Set needs to be synchronized. I think
yes, but would like to ask people here anyway, pseudo-code:
class Test{
 final Set set = Collections.synchronizedSet(new HashSet()):

I have a need to write a servlet/based j2ee implementation to run on
tomcat that can manage starting and stopping other processes on the
linux server.  Does anyone have any guidance in this area?
thanks

excume me guys,
i've a problem and i need your help.
I'm developing a jsf application.
I've 2 mysql tables

Dear experts,
i'm a student from Italy and i'm approaching java language.
I have a curious problem with the Swing components (Java 1.5).
I've wrote this class for a customizable progress monitor frame (very

I have some problems about converting types..
1-What is the fastest way to convert from Calendar to byte array?
2-What is the fastst way to convert from String to byte array?
3-How do I convert Certificate to byte array?

i work on linux/gnome (jdk1.4.2_10 to compile, jdk 1.5.0_07 to run), and
when i drag and drop a file whose name is ("données.xls") on my java
application i accept the Drop with DataFlavor:
java.awt.datatransfer.DataFlavor[mimetype=application/x-java-serialized-object ...

I would like to manage the drag & drop of an email from outlook to a
Swing application.
I have tryed the following code:
Transferable tr = dropTargetDropEvent.getTransferable();

My team needs to get rid of classes in a large application that are no
longer used. There are around 1500 class files in total and we estimate
that about 25% of these classes are no longer used. Is there some type
of tool that can identify classes that have been run during a certain

please help me with this simple java question.
I'm developing a jsf application but i have a java question.
Suppose i have an authentication bean with 3 attributes,login,password
and team that load the values inserted in a login page.

I have a class which extends JDialog, its purpose is to show a list of
values retrieved from a database, which will allow the user to select
from a table in this Dialoge, the selected string value in the dialog
should be accessable from the Parent form when the dialog is closed/OK

Hello all. This is a problem some of my students are experiencing and
I'm not sure of the best way to solve it.
They have written a program to play othello. They have extended JPanel
to create an Othello board which paints the 8x8 grid. They have added a

I'm wondering, which better/differences, in the following two rmi
binding methods:
A.
java.rmi.registry.LocateRegistry.createRegistry(defport);

Trying to deploy my java application on the intranet via JWS for the
very first time. All of my jars are unsigned and I get an error
(described below). I though that the user was supposed to decide
whether or not to allow access. So why do I get an error instead?

I have a string like this  ( test " A " ) and want to insert into the
database as same ( test " A " )

I have 2 xml strings as shown below. (Each set is in a string)
<set>
<item table_name='tname1' column_name='colname1'>34</item>
<item table_name='tname1' column_name='colname2'>35</item>