How to get rid of that black system window appearing after executing a java
application with java.exe or javaw.exe?
How to make it not appearing together with an application window created on
the basis of the Frame class?

What is difference between JApplet and Applet?

I'd like to leave some debugging functions in my code like this:
static final boolean DEBUG = true;
if (DEBUG) {
   // do stuff here

Is there a way to send a SOAP request (invoke) (via HTTP) in a TCP
socket?
The reason is complex so excuse me do not give more details.
Don't hesitate to slap me if I talk nonsense, may be notably because

I'd like to learn Java programming so I can develop cross-platform
applications (for Windows and Linux at least) and was wondering if
anyone here would be kind enough to offer some opinions on any good
"self-learning" books for this.

I use method forName and newInstance in class Class like this
instance = (GameFactory)(Class.forName(name).newInstance() );
Now to my question:
Assume that name is GameFactory then I want to pass a parameter to the

I am working on my individual project and looking for a version control
system. When I switch from office and home I want to work on the
project whenever is possible. So if there is a free hosting server to
store and manage my project sources, that may be wonderful for me. The

Is this a bug in DecimalFormat, or that I am not using it correctly?
this is my code:
public static void main(String[] args)
   {

A friend is looking for a Java programmer in the London area. He has a
small company and one software product. This application may be part
of an EU funded project.
Any one interested and available?!

I am having a big trouble while saving information into a file. I would
like append some information into file. However, each time that I try to
do this, the information of the file is replaced by the new information.
What is wrong with my routine?

I'd like to run something by you all. It is about tuning the memory settings
for a web-server and app-server. Specifically, it is about the size of the
Survivor Space (SurvivorRatio)
Both our web-server and app-server handle requests which involves the

I am using a method:
   Object lookup(Class c) {...}
The lookup method return an instance of the class c.
Is there is any way using java generic methods to insure compile-time

I'm putting together a JSP/Servlet webapp for shortening URLs.  It
works fine if I install it as a sub-directory of my domain for instance
"example.com/linker."  But I need it to be the root webapp for my
domain; when I do this, however, I get a directory listing instead.   I

I was wondering if there was a straightforward method of obtaining the
complement (i.e. the postive value) of a Currency object. Failing that,
is there a method of obtaining the same thing for a float?
Cheers,

I want to get the system date and time with java on
windows platform. I've tried with the class GregorianCalendar,
but without success. Can you explain me how to do it?
It would be very helpful if you can explain with a simple