Java tutorial
import java.io.PipedInputStream; import java.io.PipedOutputStream; public class Main { public static void main(String[] args) throws Exception { PipedOutputStream out = new PipedOutputStream(); PipedInputStream in = new PipedInputStream(); // connect input and output in.connect(out); // write something out.write(70); out.write(71); // print how many bytes are available System.out.println(in.available()); // read what we wrote for (int i = 0; i < 2; i++) { System.out.println("" + (char) in.read()); } in.close(); } }