Can someone direct me in the right direction on this? I just don't
understand what it's asking.
An Application of method.floor is rounding a value to the nearest integer.
The statement y = math.floor( x + 0.5 ); will round the number x to the

Hi, All:
I was trying to set up a demo of RMI as part of a course I'm teaching.
Even though I hadn't created a stub nor skeleton, each client looked up
an object on a remote host, and got a message back from it.

I am still having problems with objects surviving beyond the execution of
the current page (i.e. they are showing up on subsequent requests for the
same page). I have some questions relating to this:
1) When an object is declared within <%! %>, what scope does that object

I have a client running and it implemenets Runnable,  I want it to connect
to a server at certain time intervals to retrieve data.  How can this be
accomplished?

I am trying to implement a keylistener to react to when the enter key
is pressed.
Below is the code for keyTyped method:
   public void keyTyped(KeyEvent key){

I am having a bit of trouble.
I create an object as follows:
Object[] displayMessage = { "Enter Server Hostname \n", textField };
Then use this in the JOptionPane:

I have a design problem that I am unsure of how to deal with, the
problem is as follows.
The basics:
I am creating a search dao for using google, the dao should support

I'm studying for the SCJP 5.0 and have a question about Generic
Collections.
The question is, If I use wildcards in a collection then I can't use
the add() method for the collection (ArrayList in this example). I can

I would like to write a gui to run windows and linux commands, is this
possable ?
the aim would be to write a GUI that would run on top of the os and for
example, I would like to run dir on a windows box i.e.  I would click

I have a thread (Producer) that is supposd to sleep for a random amount
of time, record it in a vector and wake up another thread (Consumer).
That thread should read the elements from the vector when the first
thread (Producer) is done writing to it.

I have a program which has 2 threads: producer and consumer. Producer
sleeps, wakes up and outputs how long it slept and what time it woke
up. That info is passed to a vector. Consumer then gets that info from
the vector and prints it out. Well, at least that's what it should do.

I have a question about immutability, or at least, a question
about the right way to implement the concept I have in mind.
The folllowing is a distilled example of a more complex problem.
Suppose I have some bean class called Something:

I'm supposed to make an array of 10 unique numbers but when you try to
put in the same number twice it tells you "this number is already in
the array". And when you give -1 it causes you to exit the program. I'm
still rather new to java but I'm having a real hard time making this

I have a JPanel with various buttons on it.  I would like 'O' to
activate the "Ok" button, 'P' to activate the "Pass" button, etc.
without holding down the 'Alt' button.
Do I add an actionlistener to the JPanel? or JFrame maybe?  But then

hii guys actually i wanted to know how to make the setup file of a
software which v use to install a new software, kindly reply soon