I am looking for comments on java certifiaction training through sun.
I am a good developer with a B.S in computer science and 15+
years of development with alot of C++ and some Java.
I am wondering if I should consider Java certification through sun ?

im looking for the source's for the url protocol handler packages
java.protocol.handler.pkgs
any success stories with creating protocol pkg's and any good
doc's/howto's that anyone knows of? im considering using this instead

I looked up System.getProperties, but to be honest, I have no clue how
to use it in light of what I can do in PHP, which is this:
<?php echo $_SERVER['HTTP_USER_AGENT'] . ' ' . $_SERVER['SERVER_URI'];
?>

I do not possess the ability to translate PHP into JSP, but I thought I
could.
Here is the code:
[CODE]

I was under the impression that you extended classes so that you could
have the same variables as the class you're extending from.
But when I try this:
public class A {

[CODE]
 String message = "", send = "", quit = "", errorMsg = "", cookie =
"";
 boolean hasSubmittedMessage;

Hello, guys! I have a problem running the following code with eclipse
showing that:
java.io.IOException: Stream closed
    at sun.nio.cs.StreamDecoder.ensureOpen(Unknown Source)

[CODE]
package ppowell;
/**
* For implementation of Retriever by superclass FlatFileRetriever

         I am trying to learn Java. I found the explanation of
ClassCastException in Sun website as follows. But it seems rather
simple. I don't understand " cast an object to a subclass of which it
is not an instance" in the explanation. Please help me. By the way,

Did something change in the generation of jar files between 1.4.1 and
1.5.0?  With 1.4.1, I can successfully create a jar with a manifest.
In 1.5.0, using the same jar command, the .jar file is created, but the
Class-Path entry is not in the jar's manifest file.  Here's the command

How do I set the focus of a JFrame or its components, and unset the focus?
Thanks
Allan

I want to display small pictures in a text window, its actually emoticons in
a messenger I want to implement.  How should I do this in Java.  Ideally I
would like to support animated pictures, but any method to display any
format would be welcome.

How in the world is this one happening:
[Quote]/~ppowell/includes/chat_submit_message.jsp:44: cannot find
symbol
symbol : class UnsupportedEncodingException

Hi Java Gurus
 I am adding JPanels to the JTabbedPane dynamically.  Initally i have
one tab pane. when i am adding the second tab pane using the following
code

I would like to obtain a list of the
available encodings at runtime. java.nio provides the
java.nio.charset.Charset.availableCharsets method for
doing this, but as far as I can tell there is no