Let's say I have a web page called /emailForm.jsp with a form and a
submit button.  Let's also say that /emailForm.jsp receives some
request parameters.  When the user clicks the submit button on the
emailForm.jsp page, an http request is sent to /submitEmailForm.do.

When I call:
Math.sin( 1 )
it failed..
cannot find symbol

could someone here show me a demo how to write these kind of code that
list files or directories recursively in high efficiency just like
native program's speed?
Does the new feature NIO in JDK 1.4 could help?

 i am wondering how to keep the scroll bars in the text area down when
more and more text is appended to the area... can anyone help ?

I'm trying to improve the performance of some Java that someone else
wrote.  This code uses SocketChannel's read() method.  I'm considering
rewriting the code using InputStream (which I know is fast) to improve
performance.  I'd appreciate the experience and opinions of others to

I've a feeling that this should be general knowledge, but I haven't
been able to find any clear information on it.
A small Java app, run on Linux (Ubuntu 5.10, kernel 2.6.12, Dell
Latitude w/Pentium M), shows up in the System monitor as using the

I'm getting behind with Eclipse and would like to upgrade from my current
version, 3.0.2, to the newest stable version, 3.1.1.
Unfortunately, it's been so long since I upgraded from 3.0.1 to 3.0.2 that I
can't remember the process for upgrading! I thought I went into

Hi, I am writing a code to retrieve all the primary keys of the tables
in the database. I tried to use
DatabaseMetadata dbmd = dbConnection.getMetaData();
ResultSet rs = dbmd.getprimarykeys(null,null ,"%"),

Hello! I have problem with TreeCache. I wrote simpe class to Caching values
based on TreeCache, and it works, but very often
it looses values(there are ie empty Strings as values (no null values!!!)).
Thanks for any help. Here is my cache class:

I have a soft generating report in XML files. I am searching a soft or
simple Java code to compare 2 XML files, generating report only with the
differences, conserving the XML tree of data.
Any idea ?

I was just looking through the archives on deploying a WAR file on Sun
One WS.  I found an old set of instructions dating back to 2001.  It
didn't seem to be complete for deploying a WAR file.  I was wondering
if anyone can provide the steps for deploying a WAR file on Sun One.  I

Scanner scan = new Scanner(System.in);
String cmd[] = scan.nextLine().split("\\s");
if( cmd[0].equals("use") )
{

I just used Java Webstart to download and run Sun Download Manager.
So, the next time that I want to use SDM... where is it on my local
drive? WebStart never asked for a location. XP's task manager only
showed that javaw was running, so the SDM must be a jar that is saved

How to match a mathematical expression in a single regular expression?

I have a SQL query inside XML document which is being read by JSP
application.
Is it possible to reference a Java method inside the SQL string?
Something that looks like this: