In non-blocking NIO, why do I need the OP_WRITE flag to be set in an
interest set ever? I understand that OP_READ indicates that new data is
ready to be read. But for writing, should I not only need to do
Channel.write(buffer) whenever I feel for it?

Dear programmers,
I am having some trouble in order to determine the OS used by the JVM. I would
like to load some libraries but i don't know the system that is running it.
I would like to do something like:

I have received a complaint from my internet service provider for posting my
idea's/opinions on this/these newsgroup(s).
I am not certain if it was a complaint from a prankster or from the
administrators of this newsgroup or one of these newsgroups.

The server at http://www.physci.org/ is crushed.
Please recover ASAP !!!
Thanks.

Can anyone point me (share code) to a Java wrapper (aka DB-Mngr, aka
data access object) that supports a call to Oracle SPs.
Something that would basicly implement:
Interface DatabaseMgnr

I have been looking an nio trying to figure out how it works, and
hence where it would pay to flip over to it.
It uses an underlying InputStream. So if you read the whole
InputFileStream into a byte array in one i/o, NIO would do you no

I have an arraylist and associated with it 2 iterators. When iterating through the arraylist in the forward and reverse direction and removing nodes under certain criteria. I get a concurrent modification error. This is with using the iterators remove() method and not the ...

I send a large number of emails using javamail. My problem is that my
provider limits the number of emails I can send out per minute per
session. On top of that, it does not allow me to use another SMTP
server than its own.

I am trying to learn the requirements for the new Java Certification exam and
came across something that doesn't make sense to me.  According to the JDK 1.
5 docs, java.text.DateFormat is an abstract class, yet it has a constructor,
DateFormat().  It also has a method, ...

Iam wondering if it's ok to get negative values from hash code?
it seems strange to me, since hashcode should reffer to place in memory,  
or have I got it wrong?
public class Test {

I download an opensource java program named chabria text normalizer
which normalizes a string according to a set of rules defined in a
seperate file. This file is read by the program to apply rules. Source
for parse this rules is auto generated by another opensource program

for a web-app login checking, it's said the right-way is to process
authentication then to process authorization.
I'm wondering:
1. Does it mean it needs to connect database twice, each of which for

I have a question about fitting the size of a Jframe to the screen. i
have an application that has some Jframes, and when i use these
commands:
frame.pack();

I've got terrible problem with unziping binary files with ICSharpCode
library. I've tried to do it by the code below with jpg files. The
files are unziped but they are unreadable. I don't know what I have to
do. Maybe it's something wrong with library. Can anybody help me??

My question is pretty much what the title describes.  My situation is:
The essential task is to provide a service to web user.  This service
can only be accessed from a java program on the backend, and this
program, unfortunately, is a 24/7 live process.  My teammate is going