Thread-launched running processes won't destroy (Java)

Question

Starting multiple threads and having each exec() then destroy() a running java process result in some of the process not being destroyed and still running after program exit. He

Answer 1

You should close the input/output/error streams to the process. We saw some issues in the past where the forked process was not completing properly due to those streams not being closed (even if they weren't being used).

An exemplary solution:

p.destroy();
p.getInputStream().close();
p.getOutputStream().close();
p.getErrorStream().close();