I am in the process of trying to convert an existing perl program to java.
Being a very rusty newbie programmer I've discovered I didn't know what to
do with environment variables and taking them into a java program.
So what I work in is linux and I set a few environment variable.. ...

I have a program in java that I want to run as a service. Or have an
installer install it as a windows service.
Any ideas?
Oh yeah.... one more thing. This is more of a dos question but I will

Hi, All.
I download "j2eesdk-1_4-dr-windows-eval.exe" from SUN site.
I installed it on my WinXP(sp1) machine.
And then I clicked "Start->Sun Microsystems->J2EE 1.4 SDK->Start Default

I read a java programmming book which talks about Thread.sleep() in
following way.
"the sleep() method can throw a checked InterruptedException, so
your're forced to acknowledge the exception with a handle or declare.

If a class member is a pointer and if the class does not want to allow
copy, assignment operations, the class declaration will look like this
in C++:
class testClass

Hi all;
I'm new to Servlet and jsp programming and I'm stuck.
I'd like to retrieve data from a database and display it in a html table.
So I wrote a servlet that gets a result set and puts it into a Vector

I've been pulling my hair out all day trying to install jrockit onto a
redhat 9 box.
every bit of advice I've had to find has said that I need to install the
binutils but I'm having no success at all and ther definetly on there.

I've been developing a Java app in 1.4, but would like to get it to run
on 1.3 JVMs. What is the easiest/best way to tell ANT to tell the
compiler to complain when it encounters methods that do not exist in
1.3? I tried "target" and "compiler" without much luck. Do I have to

Sometimes, the Java compiler will complain that I need to catch exception for a
method that I use but sometime it doesn't.  So,
1) How does the compiler determine if a method needs to catch exception or not?
2) In general, should I always catch exception when in the case when the

I want to learn how to program JSP web applications.
I've programmed Java applets and C# web applications, so I understand
Java syntax and the HTTP request/response model, but what else do I need
to know? Are servlets something I should be able to program first? They

I have a problem: I have created a Vector, which elements are also of
the type of vector. But I can't read the elements of the "inner"
Vectors, because java don't wan't to understand, that these are also
Vectors, it only knows them as object.

There is RMI server RemoteServer with method receive(Agent agent)
and there is class HelloAgent class extended from Agent.
RemoteServer don't know about class HelloAgent. So when I call
  remote.receive(new HelloAgent())

Hi,
I am in need of html to pdf conversion tool. I am using Java and i
want to integrated html to pdf conversion using java or using Java
JNI.

When compiling package files, I keep on finding that I end up with a
package folder within a package folder, i.e. if I have a package
called parts, and so I make a folder called parts in the root of the
application, then when I compile the packages, I end up with a folder

The API docs for Process.getErrorStream() says "Implementation note: It
is a good idea for the input stream to be buffered".  What happens if
it's not buffered?
I've got essentially the following in the setup() method of a junit test