What is the output(transient variables)? : Questions « File « SCJP

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import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class MainClass {
  public static void main(String[] args) {
    SpecialSerial s = new SpecialSerial();
    try {
      ObjectOutputStream os = new ObjectOutputStream(new FileOutputStream("myFile"));
      os.writeObject(s);
      os.close();
      System.out.print(++s.z + " ");

      ObjectInputStream is = new ObjectInputStream(new FileInputStream("myFile"));
      SpecialSerial s2 = (SpecialSerial) is.readObject();
      is.close();
      System.out.println(s2.y + " " + s2.z);
    } catch (Exception x) {
      System.out.println("exc");
    }
  }
}

class SpecialSerial implements Serializable {
  transient int y = 7;

  static int z = 9;
}