How to communicate matlab and another process?

[123ja]

Hi everybody,

Here is the situation. I have matlab and a java process that i want to communicate.
By the occurrence of an event, this process will send matlab a message containing:

- information to be updated in a specific point of a file and;
- a command to perform some calculations with the updated data;

After this, matlab has to send a message back to the process and inform the result of the calculations that were just done.

Can anyone help me with this?
Thanks in advance.