how can i access java deamon public method and get info from java client ?

i have java daemon , that holds info . it is always working . ( its my code i can kill it and change it ) .
now i like to be able to get and set parameters while this daemon is running with separate java process , they both in the same machine and i have access to the daemon jar's .
is it possible ?
do i use reflation

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Originally Posted by umen

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do i use reflation

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Reflation? - stimulating the economy by increasing the money supply or reducing taxes? I don't think that would work...

The simplest, most robust way is probably to have your daemon monitor a parameter file, and when it changes, to reload the parameters from the file. You can use the Watch Service API to get notified when a file has changed in the filesystem.

It is better to have an approximate answer to the right question than an exact answer to the wrong one...
J. Tukey

can i do it via jvm ? like c++ to java ?

Another possibility would be to use a Socket. Connect and pass the info.

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Originally Posted by umen

can i do it via jvm ? like c++ to java ?

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Whut? The Watch Service API is part of Java, and Java runs in the JVM... what has C++ to Java got to do with anything?

Furious activity is no substitute for understanding...
H. H. Williams

Or you could RMI to get and set the parameters.

But, if you just need to set the values then dlorde's solution is probably the easiest to implement.