Design Suggestions Required

Hi,
I am trying to design a master-slave system with the following attributes:
1. Linux Master box having all the Java code.
2. At least two Windows XP Professional Slave boxes (no Java code on any of these)
Front end screens on Master would contain a text fields for IP Address and Java program to be executed. On a click of button, the slaves (who's IP Address was entered in the Master screen text field) would get the request to execute the given Java program, a given number of times. Once executed, each slave would turn the results in to the master via a file. After all the slaves have turned in their results, Master would consolidate the results, work another program on the results and re-delegate tasks to the slaves. The steps would stop iterating only when an exit criteria specified by the program has been met.
If we were to restrict all code to only the master box, what could be the lucidly possible ways to achieve this design?
Thanks!

I don't think it is possible to just throw code at a machine and make it run. You will need some kind of application in which to handle it. What you're trying to achieve can be done easily, if you were to write something to communicate with RMI, but as far making it work without something to know it's Java, It doesn't seem possible. Applets run on machines because you have a browser that knows to dispatch all applets requests to the JRE, you need something that will do the same.
hth

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The idea is right.
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Hello all
I am seeking opinions on how to design an application in which multiple classes have access to a common set of configuration properties that may change at runtime.
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909773 wrote:
For example a 24x7 service that is supposed to handle requests on port X is very unlikely to need to change to port Y while running.
Or what happens if you have a plugin architecture and someone changes the root plugin directory to another directory.On the other hand, the maximum draw distance in a virtual world, an application's "skin", or a filesharing client's bandwidth limit are, in my view, properties that may very well need to change at runtime.
Seems reasonable to me. That is the easy part. The hard part is
1. How/when do you reload
2. How do you code your app so it gets the new values and uses themAs for 1, apologies if I haven't explained correctly: I am talking about properties that may change programmatically at runtime, e.g., by a user through a configuration dialog. Ok.
I can think of at least one way to deal with 2 (classes interested in all or a few of the properties implement some property listener interface and accordingly re-get values when notified about changes).That is how you detect it. It has nothing to do with whether the current running process is in a state that allows changes to be made.
all over the code reflects a wise design decision vs using a singleton property manager, references to a single property manager object (maybe even a java.util.Properties object) passed around through constructors, approaches involving dependency injection (not relying on any framework though), or else.Depends on the application. For example with a distributed system propogating the changes correctly so systems are not out of sync can be problematic.
Depends on the context in which your user makes changes. If it is an admin then it has the same context has if you were using a file. In that case I would use a singleton.
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