I have a problem invoking java VM by c code through JNI. The jdk is
j2sdk1.4.2_07. I use gcc in MinGW on win XP os.
I can compile and link the program correctly, but when I run the result
.exe file, it reported that the JNI_CreateJavaVM had failed.

I have a database commit question here:
suppose I have a transaction,  inside the transaction i have 2 queries
to run then commit. The 1st query is to update the database, and the
second query is to select from the database which relates to the 1st

I've seen tons of image galleries in java, but has anyone seen a fancy way
of showcasing audio files?

I would like to use Servlet kind of sessions outside of Servlet
container. Is there a library for that?
Basically what I need is HashMap with secure key generation and
automatical session invalidation after a given time. This would be a

I have a small problem.
1) The initial oval, from paintComponent, isn't draw
2) If the applet window looses focus, even the rectangle disappears.
I suppose it's a problem of instance. But I can't see what's

I wrote a small program to test scalability in a multiprocessor
environment (in my case an Athlon 64 X2). I included the source below.
To my surprise the calculation does not run faster if I use 2 threads
(which should be the case if I have 2 processors) but it runs 5 times

Hi,everybody
as the title, I need the tableheader to be editable, and i rewrited the
CellEditor for the tableheader,
the code is as follows:

I am trying to (zip or jar) a directory (including empty directories)
using
java.util.zip.* and java.util.jar.*.  I can create zip and jar files
but

I created a test program to try the speed and size management of the JDK
HashMap. With regards to this I was wondering if anybody has any
comments on whether this is an appropriate way of testing this
performance, i.e. how realistic is the results with respect to caching

Hi, i ve got a raw image to be displayed, i ve used the program below
to generate the raw image...
[CODE]
import javax.swing.*;

hi experts .
When I access remote session bean from applet ,client side system
report error:
java.lang.ClassFormatError: Truncated class file

I was rather surprised at the outcome of this code, which I created to show
someone how a finally block will run even if the try or catch block returns
from the method:

I notice that there is another poster with a similar problem to mine,
but he's on Unix and I am on Windows, and I think there may be a
setup/config problem, so I am starting a new thread
I am also getting an error creating the JVM, I am using j2sdk1.4.2_04

I have a question that concerns the Observer Design Pattern.
Why does every book and article that I have read on the topic does not
consider the fact that when the Observable notifies its Observers it
goes through a loop without starting a new thread for its Observer.

I'm looking for a free tool which can generate at least class and
sequence diagrams form my java sources.
Does anybody know such a tool (or eclipse plugin)?
Markus