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) {
Dog d = new Dog(35, "Fido");
System.out.println("before: " + d.name + " " + d.weight);
try {
FileOutputStream fs = new FileOutputStream("testSer.ser");
ObjectOutputStream os = new ObjectOutputStream(fs);
os.writeObject(d);
os.close();
} catch (Exception e) {
e.printStackTrace();
}
try {
FileInputStream fis = new FileInputStream("testSer.ser");
ObjectInputStream ois = new ObjectInputStream(fis);
d = (Dog) ois.readObject();
ois.close();
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("after: " + d.name + " " + d.weight);
}
}
class Dog extends Animal implements Serializable {
String name;
Dog(int w, String n) {
weight = w; // inherited
name = n; // not inherited
}
}
class Animal { // not serializable !
int weight = 42;
}
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