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

public class Tester implements Serializable{

	transient int x = 5;

	public static void main(String[] args) {
		Tester tester1 = new Tester();
		try {
			ObjectOutputStream os = new ObjectOutputStream(
					new FileOutputStream("data.txt"));
			os.writeObject(tester1);
			os.close();
			System.out.print(++tester1.x + " ");
			ObjectInputStream is = new ObjectInputStream(new FileInputStream(
					"data.txt"));
			Tester tester2 = (Tester) is.readObject();
			is.close();
			System.out.println(tester2.x);
		} catch (Exception x) {
			System.out.println("Exception thrown");
		}
	}

}
                                

A  5 5

B  6 5

C  6 0

D  An exception is thrown