How can I cause a child process to exit when the parent does?

Question

I am launching a child process with ProcessBuilder, and need the child process to exit if the parent process does. Under normal circumstances, my code is stopping the child

Answer 1

You can simply start a thread reading from System.in in the child process. If you are not writing to stdin of your child, nobody else will do and the thread will block "forever". But you will get an EOF (or an exception), if the parent process is killed or dies otherwise. So you can shutdown the child as well. (Child process started with java.lang.ProcessBuilder)