Java PipedReader.read()

public int read()  throws IOException

import java.io.*;
// w  ww.j a va 2 s  .  c  om
public class Main {

   public static void main(String[] args) {
      PipedWriter writer = new PipedWriter();
      PipedReader reader = new PipedReader();

      try {
         // connect the reader and the writer
         reader.connect(writer);
         
         writer.write(70);
         writer.write(71);

         // read what we wrote
         for (int i = 0; i < 2; i++) {
            System.out.println((char) reader.read());
         }


      } catch (IOException ex) {
         ex.printStackTrace();
      }


   }
}