Java is platform independent, but some task are platform dependent
(for example shuttind down, as discussed in messages before). So is
there a way to know on which platform program is runinng? whether it
is windows, linux, or mac?

Is it possible to shutdown a user's computer from within Java?

First of all I`m little bit lame at java3D. I have the scene,where are
blocks. The scene reminds city . I need to navigate it with keyboard .
Few keys need to navigate observer view
(right ,left,up,down,zoom) ,others navigate scene views ( slope and

I want to create a graph where output from one component is input for the
next.  The components are invoked serially, so one component needs to be
done before the next one kicks in:
         +--------+       +--------+       +--------+

Im writing a unit test class, and I want to check if a given class is
importing some package (ie: java.util.Collections) from the code, is
that posible?
With this code

I'm trying to find out possible memory leaks in a program. While they
are not exactly the cause, I've found myself in front of some code
like this:
public class NonStaticClass {

I was wondering if any one has experience in which multiple Junit
classeshas to be run concurrently and not in a sequential way(or
whichever way Junit runs).  As I understand Junit just scans/gatters
all the files for testcases and run then one by one , it also

Quick and obvious question:
Is the Postgres TEXT data type the same as the standard SQL CLOB data type?
This is not, apparently, documented in the java.sql package javadocs,
the Postgres JDBC docs or the Postgres 8.1.8 manual. Leastways, a fairly

1. TYPE_FORWARD_ONLY - The result set is not scrollable; its cursor
moves forward only, from before the first row to after the last row.
The rows contained in the result set depend on how the underlying
database materializes the results. That is, it contains the rows that

There are currently more than 10 web server nodes. These server nodes
can be logged in using a root/public account. Then users can run a
series of management commands under CLI mode.
I currently have a web application. This application can add these

I want to create a threadpool, to which I can sumbit all jobs but they
start concurantly or by given a signal runAll.
is it possiblt by Executors or ExecuteService etc
thanks

I am new to this group and I have been working on Java .
Could anybody plz tell me how to aproch to design a web application
with proper architecture and
what is design patterns.

I am studying SAMS Teach Yourself JSP in 21 days and this book has a
chapter on Struts. The book comes with sample code and I tried running
the code on this chapter on Struts in Tomcat 5.5.16.
The application is fairly simple but I get this error when I try to

i´m new to RMI. I´ve made the RMI Tutorial from SUN. I have first 2
questions:
1)
If more clients connect to the server. Becomes every client

I am facing a problem while my applet is getting downloaded. My applet
tries to cache few jars on the client home directory and all jars
don't get cached. I have checked it and this is one jar which is
creating problem. I have chcked this on two machines with same IE and