I am new to J2EE. We are required to develop a 3-tier application which
has a web client, session bean,entity bean and the data source.
I have downloaded J2EE 1.4. Is this enough or do we have to downlaod
any other server like web sphere, tomcat, JBoss etc? And do we have to

i m working on a project in java in which i want to import sound files
from hard disk into the interface , what shld be the code for loading a
sound file into the java program?

I need to put some html code in my java bean or taglib. What I did is
that I first get these html code by designing it in front page. Since I
need to put these html code in a loop(say I want to generate a table
dynamically) in my java bean or taglib, I copied thes html code in my

I've been trying to troubleshoot a code based on the method shown in
http://java.sun.com/products/jfc/tsc/articles/treetable1/index.html ,
on how to create a treetable. The code seems to work just fine on a
unix machine, but it doesn't work correctly on an OS10 machine. What

I read a news report today, saying that within IT industry the
percentage of computer programmers has been decreased from 21% in 2001
to 17% now, while the percentage of software engineers has been
increased from 21% to 24%.

I'm trying to make a tool tip pop up whenever the user does a
mouse-over on a filled rectangle that I've drawn on the screen.  I have
no trouble creating the rectangle
Rectangle test = new Rectangle();

Is there a way to have a text file or an excel file and in it list
dates and a message, then having my web page reference that file and
pop up with the message if the current date matches a date in my file.

Is this a good place to post an Ant question?
How do I add the following flag to javac:
-Xlint:unchecked
?

In my servlet I want to somehow open another URL, retrieve the entire HTML
code from it as text, change it a bit then serve this back to the browser -
Something like -
   StringBuffer buf = new StringBuffer();

I am trying to call web-browser in my java desktop application. I
succeeeded in calling webpage which is at the localhost but when i
tried to access any other website say http://www.google.com it gave an
error saying page not found. What might be the problem ?

I have a network situation where I pass an array of bytes over the
network and use them defineClass in ClassLoader to make a class. It
works well except that the only source I have for the byte array is
the .class file. It would be ever so much more convenient to have a

After I update some files in eclipse, then if I execute ant to do a
compile, the ant does not compile the updated files. Why?
But if I use other editor, say ultraedit or eaven Dos's editor to eidt
the file, ant can find the files are updated and compile these files.

I have 2 frames, one frame has panel, which displays a bar chart. I
have another frame which display the bar chart values in text in
JTextPanel. Bar chart drawing is real time with data coming from
server. So when I get the data  pass it to the second frame to display

I have a problem with Hibernate.
Lets say I have class A, BList and B. They look like this:
class A {
    private long id;

Are there recommended formal ways of documenting the formats of XML
files?  I don't just mean a validating schema, but something that
would let human understand how to compose the files?