Java using streams as sort of “buffers?

Looks like both streams need to be constantly reading/writing so you'll need two threads independent of each other. The pattern resembles JMS a little bit, in which case you're feeding information to a "queue" or "topic", and wait for it to be processed then put on a "output" queue/topic. This may introduce additional moving parts, but you could write a simple client to place info onto a JMS queue, then have a listener to just grab messages, and feed it to the input stream constantly.

Then another piece of code to read from output stream, and do what you need with it. Hope this helps.

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