import java.io.*;

public class Dog extends Animal implements Serializable {

public String name = "";

public Dog(int age, int size, String name) {

super(age, size);

this.name = name;

}

public String toString() {

return super.toString() + ", Dog's name = " + name;

}

private void writeObject(ObjectOutputStream out) throws IOException {

// Take care of this class's field first by calling defaultWriteObject

out.defaultWriteObject();

/*

* Since the superclass does not implement the Serializable interface

* we explicitly do the saving... Since these fields are not private

* we can access them directly. If they were private, the superclass

* would have to implement get and set methods that would allow the

* subclass this necessary access for proper saving.

*/

out.writeInt(age);

out.writeInt(size);

out.writeObject(habitat);

}

private void readObject(ObjectInputStream in)

throws IOException, ClassNotFoundException {

/*

* Take care of this class's fields first by calling

* defaultReadObject

*/

in.defaultReadObject();

/*

* Since the superclass does not implement the Serializable

* interface we explicitly do the restoring... Since these fields

* are not private we can access them directly. If they were

* private, the superclass would have to implement get and set

* methods that would allow the subclass this necessary access

* for proper saving or restoring.

*/

age = in.readInt();

size = in.readInt();

habitat = (Habitat)in.readObject();

}

}