Hi all. I am trying to write a program where it has to connect to a
MySQL Database. Within the program there will be a drop down box that
will show class room names. In the datbase there is going to be a
table for each class room. I would like to add every table name within

I am a newbie in java.
By using return in function, we can return a value of some variable or
an array of some special data type.
I am wondering if there are multiple datatype, e.g. String and int,

I have an app that, at one point, really bogs down as so many objects are
created and released in a lengthy process.
I am wondering if I may not be able to improve performance by System.gc() in
some "right" places in my code (wherever those might be!). It seems to me

I have 2 arraylists al1 and al2. I'm copying al1 to al2 i.e.
al2=al1;
if i'm removing some elements from al2, the same elements from al1 too
are removed.

Hi, I have a String containing numeric characters. I need to cycle on
this String extracting one int digit per-cycle.
Which method should I use?
Thanks.

    Why are the BitSet manipulations so slow on large BitSets when I try
to modify the same bit twice in a row? I've been running tests on
x=new BitSet(size=1000000). If I first turn all the bits on, and then
turn all the bits off, as follows,

If a wana pass an array and an object of another class as argument to
a method, what is the procedure.
Plz, Help me.
Regards

I have the Java JDK installed on my old Sony Vaio laptop, but recently
switched to use my newer computer.  I re-installed the Java development kit
(which used to be called the JDK ?? and now is called the SDK or
something.... Anyway I use the BlueJ IDE alongside it too, so also

Say I have a String in Java like
"To be or not to be, that is the question.
William Shakespear"
How can I convert it to a xml file that has two nodes, each of which

i've got the following problem :
i'am getting some string with polish characters as some artifacts how
can i change these letters back to normal polish letters??
 i've tried something like that

 I am having a problem to save from ByteArrayInputStream to file..
Refer to the following excerpt of code:
                       ...............
                       DatagramPacket receivePacket = new

conside an example like...
you have 5 Servers, one user queue, and you want to distribute the
users to these 5 servers, users come at different time, assume truely
random

I have some years of experience with C++ and now need to learn java. I
appreciate if you could advise me on how to get started. In the past,
I used to work with Visual C++ 5.0 and 6.0 and have recently switched
to Visual Studio 2005. I see there is a Visual J# available out there.

While I don't see that there would be an actual "right" answer to this, I'm
sure experienced programmers can say what tends to work and what doesn't.
I have a situation where I will be passing one object to another so it can
be configured and used internally.  I could pass it with a ...

I see a code like this:
in a Thread:
--------------------------
public void run() {