This question might seem wiered to the "gurus" ... but the thing is I
am new to servlet programming and my servlet will perform different
task ... and it is necessary for client to aware of the current task
the servlet is performing at the moment ...now suppose in the middle of

- Why doing that is incorrect ?
--- code ---
ServerSocket serverSocket = new ServerSocket(11000);
MySocket socket = serverSocket.accept();

I hava an applet/application which can validate an XML.
But there are some problems because the schemaLocation
In the xml-file the schemaLocation = "mySchema.xsd".
But if I start my app in a browser as applet the parser searches on the

I use JExcel for creating excel workbook.
But when the excel data is very big, I got Out of memory error, Because
JExcel always save all the data in memory then, write to stream.
I know about -Xmx, -Xms, but some times I need to create a lot huge data

I have been programming with VC++ for many years. Now I would like to extend
my knowledge to Java. I'd like to know what "Extends" and "Implements"
keywords in the class declaration do... Thanks in advance
Jack

I am using Java transformer (Xalan) to transform large XML
data with some XSL.
And whenever the data is too large (>50 MB), I get Out of memory error.
I am wondering, is there a way out?

I need to execute a different ant routine (build2.xml) inside my
build1.xml.
This is my directory structure:
Parent/source/myproject/Human/Man/John/Peter/build1.xml (current)

I'm trying to convert a String to a float, do some arithmetic on it, then
display the new value on a Swing text field. Then do the reverse. Take a
decimal numeric value the operator has entered from the GUI, convert it to a
float do some arithmetic to remove the decimal, convert ...

I'm new to web services and am deciding whether or not to implement my
web service as a simple java class or a stateless session ejb.  Reading
the weblogic documentation, one line confuses me "Implementing Web
Service by Java Class - write thread-safe code, because WebLogic

i have a questiong, i have a problem running ant's <exec>.
    <exec dir="${DATA.DIR}/registry/java" executable="addregistry.bat"
os="${os.name}">
       <arg line="addregistry.bat"/>

I have a CSV file with 100 columns and an unknown number of rows that I
am going to parse and insert into a database.  I can't just fill up an
ArrayList with potentially 65K objects because performance just tanks.
At every 1000 records, I thought I would just shot that ArrayList ...

I am having a hard time connect mysql with Java.
I am using the code like this:
Connection db;
try {

My code reorder columns and calls fireTableStructureChanged. But it
doesn't work. All I see is the default order of columns. Please see the
code below. Thanks for your help
for(int i=0;i<count;i++) {

Hello.  I am trying to learn J2EE.  I've been poking around with the
following which seems like an infinite loop.  I know I must be doing
something simply stupid, but I can't figure it out.  Anyways, my
welcome-file, welcome.jsp forwards to gatherer.jsp which then forwards

I'm using drawArc() to draw an arc inside the bounds of a rectangle.
I could use fillArc() to fill the area contained inside the bounds of
the arc but I'm interested in
filling the area inbetween the outside of the arc and the containing