Java에서 파이프를 사용하여 OutputStream을 InputStream으로 변환하는 방법은 무엇입니까?

PipedInputStream in = new PipedInputStream();
final PipedOutputStream out = new PipedOutputStream(in);
// in a background thread, write the given output stream to the
// PipedOutputStream for consumption
new Thread(() -> {originalOutputStream.writeTo(out);}).start();

PipedInputStream in = new PipedInputStream();
new Thread(new Runnable() {
    public void run () {
        // try-with-resources here
        // placing the try block outside the Thread will prematurely close the PipedOutputStream
        try (final PipedOutputStream out = new PipedOutputStream(in)) {
            // write the original OutputStream to the PipedOutputStream
            originalByteArrayOutputStream.writeTo(out);
        } catch (IOException e) {
            // logging and exception handling should go here
        }
    }
}).start();

PipedInputStream in = new PipedInputStream(out);
new Thread(() -> {originalOutputStream.writeTo(out);}).start();