Java PushbackReader.reset()

public void reset()  throws IOException

/*w w w  .j  a v  a  2  s.c  o  m*/
import java.io.*;

public class Main {

   public static void main(String[] args) {
      try {
         String s = "from java2s.com";

         StringReader sr = new StringReader(s);

         // create a new PushBack reader based on our string reader
         PushbackReader pr = new PushbackReader(sr, 20);

         // read the first five chars
         for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.println(c);
         }
         // try to reset
         pr.reset();

         pr.close();

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