If Super class implements Serializable interface, Then sub classes can be Serializable or not ?

Implementing Serializable interface in super class make all sub class Serializable by default.

Static data member are not serialized because static is the part of class not object.

class X implements Serializable{

}

class Y extends X {

}

class Z extends Y {

String name;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

}

public class SeriazableExample extends Z{

String address;

public String getAddress() {

return address;

}

public void setAddress(String address) {

this.address = address;

}

public static void main(String[] args) throws FileNotFoundException, IOException,                                     ClassNotFoundException {

Z z= new Z();

z.setName("Pushkar Khosla");

SeriazableExample t = new SeriazableExample();

t.setAddress("Uttam Nagar");

ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(new                                 File("D:/zzz.txt")));

out.writeObject(z);

out.writeObject(t);

out.flush();

out.close();

ObjectInputStream in = new ObjectInputStream(new FileInputStream(new                                           File("D:/zzz.txt")));

Z z1 = (Z)in.readObject();

System.out.println("::"+z1.getName());

SeriazableExample t1 =(SeriazableExample)in.readObject();

System.out.println("::"+t1.getAddress());

}

}