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I’m executing an external program which runs alongside Java using this:
Process p = Runtime.getRuntime().exec("/path/to/binary");
When I stop the Java application, the external program continues to run but I want this to stop too.
To trigger the shutdown, you could add a shutdown hook to your Java application. See Runtime.addShutdownHook().
To effect the shutdown, you could either communicate to the external process a request to stop gracefully, or call Process.destroy()