Java ObjectInputStream .readObjectOverride ()

protected Object readObjectOverride()    throws IOException ,     ClassNotFoundException

//w  w w .  ja v a 2  s. c  o  m
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class Main extends ObjectInputStream {

  public Main(InputStream in) throws IOException {
    super(in);
  }

  public static void main(String[] args) throws Exception{

    String s = "Hello World from java2s.com";

    FileOutputStream out = new FileOutputStream("test.txt");
    ObjectOutputStream oout = new ObjectOutputStream(out);

    oout.writeObject(s);
    oout.flush();
    oout.close();
    Main ois = new Main(new FileInputStream("test.txt"));

    System.out.println((String) ois.readObjectOverride());
    ois.close();
  }
}