Use cases of PipedInputStream and PipedOutputStream

Question

What are use cases of Piped streams? Why just not read data into buffer and then write them out?

Answer 1

BlockingQueue or similiar collections may serve you better, which is thread safe, robust, and scales better.

Answer 2

Pipes in Java IO provides the ability for two threads running in the same JVM to communicate. As such pipes are a common source or destination of data.

This useful if you have two long running Threads and one is setup to produce data and the other consume it.