Java PipedReader.ready()

public boolean ready()  throws IOException

import java.io.*;
//from  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);

         // check if reader is ready to read
         System.out.println(reader.ready());

         // print the char array
         for (int i = 0; i < 2; i++) {
            System.out.println("" + (char) reader.read());
         }

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