import java.io.Serializable;

class Person implements Serializable{

int id;

String name;

Person(int id, String name) {

this.id = id;

this.name = name;

}

}

class Student extends Person{

String course;

int fee;

public Student(int id, String name, String course, int fee) {

super(id,name);

this.course=course;

this.fee=fee;

}

}

public class SerializeISA

{

public static void main(String args[])

{

try{

//Creating the object

Student s1 =new Student(211,"ravi","Engineering",50000);

//Creating stream and writing the object

FileOutputStream fout=new FileOutputStream("f.txt");

ObjectOutputStream out=new ObjectOutputStream(fout);

out.writeObject(s1);

out.flush();

//closing the stream

out.close();

System.out.println("success");

}catch(Exception e){System.out.println(e);}

try{

//Creating stream to read the object

ObjectInputStream in=new ObjectInputStream(new FileInputStream("f.txt"));

Student s=(Student)in.readObject();

//printing the data of the serialized object

System.out.println(s.id+" "+s.name+" "+s.course+" "+s.fee);

//closing the stream

in.close();

}catch(Exception e){System.out.println(e);}

}

}