i got following Problem.
If i create a Registry with the LocateRegistry Object,
LocateRegistry.createRegistry("PORT");
a Registry is successfully created.

Here's the belated Java solution.
import java.util.List;
import java.util.ArrayList;
import java.lang.Math;

For those of you who have implemented
custom class loaders for plug-in purposes,
what are your strategies for handling
the class paths required by those

Hello,
Sometimes (not very frequent thank god) I get the following
NullPointerException when i start my application. If I just restart
the application (i.e no change in the code) it starts fine.  As you

I have a frame with
a awt.List and a awt.Canvas
I want by selecting diferent elements from the list to change my canvas
picture.

    I have a 3-tiers application written in Java (all tiers). It is a kind
of file server (it does some processing on files once uploaded).
Communication is simple:
client --> server --> backup

Am I misusing HashMap or just need to fix the .hashCode() override for the
key object?
The class I use as a key for a HashMap is unique based on a combination of 4
ints.  Normally,  about 5000 instances are created and persist over time.

I have a servlet that reads its configration from a xml file during
init().
A web based interface will be used to specify the configuration used by
the servlet. The interface will do a post on servlet and the servlet

I m new to TOMCAT. My question may be very newbie kind...
invoker is configured as
<servlet-mapping>
    <servlet-name>invoker</servlet-name>

I have this strange issue with an Out Of Memory error thrown on a Sun
JVM 1.4.1 residing on a Windows 2000 box.
The Windows boxes is configured to have 4 GB physical RAM out of which
2 GB is available to applications on their server. ( Based on this

i run an tomcat 5.5.9 and jdk-1_5_0_03-windows-i586-p.
I'm write an small test HttpServlet (with init/destroy), wich on-loaded
through web.xml at starttime. The init function correctly called by tomcat.
But uf i close tomcat, the destroy function do not called:

I am planning to use NetBeans 4.1 in a Java course I'll be holding.
As a normal course would, I start easy, with small programs, each
demonstrating a basic feature / component of the language.
NetBeans 4.1 has a default project structure that may be somewhat

How can I import and use JavaBeans with JBuilder? I founded some
interesting JavaBeans...
Please help!!
Thank you very much!!

I am having trouble getting certain  tags to work.
My struts action places various things in the sessions
(bibliosTotal, biblio1, biblios) The following bare EL work fine.
The scriplet works fine and prints an expected value out.

I already wrote some simple java stuff both with text editor and with
NetBeans IDE.
I already know other languages and overally the language Java is clear
to me..