IPC samples needed in java?

[ramjeev]

Hi buddies,
I m in need of IPC sample to communicate between two applications.I hav to start one app from another and I want to know whether the second is running or not.If any samples on Interprocess communication,please let me know.

Thanks in advance.

[vidaj]

If you have written both programs yourself you can use java Sockets to communicate. Take a look at http://java.sun.com/docs/books/tutorial/networking/sockets/clientServer.html

When the program starts you create a thread that runs the servercode, which listens to a socket. All it does is when it receives incoming connections; accept it, reply, close it.

When you want to check if the program is running, try to send a message on the same port the program is listening on. If there's no reply, start the program, if it replies it's already running :)

-vidaj-