Java tutorial
import java.io.PipedInputStream; import java.io.PipedOutputStream; public class Main extends PipedInputStream { public static void main(String[] args) throws Exception { PipedOutputStream out = new PipedOutputStream(); Main in = new Main(); // connect input and output in.connect(out); // write something out.write(70); out.write(71); // receive a byte in.receive(71); in.close(); } }