Assume that the reference variable r refers to a serializable object. Write code that serializes the object to the file ObjectData. dat.

FileOutputStream out = new FileOutputStream ("ObjectData. dat");

ObjectOutputStream ostream = new ObjectOutputStream (out);

ostream. writeObject (r);

Explanation:

For object serialization, we can use the writeObject method of java. io. ObjectOutputStream class.

The complete code fragment is as follows:

import java. io.*;

class Demo{

public static void main (String args[]) {

try{

r =;

FileOutputStream out = new FileOutputStream ("ObjectData. dat");

ObjectOutputStream ostream = new ObjectOutputStream (out);

ostream. writeObject (r);

ostream. close ();

} catch (Exception e) {

e. printStackTrace ();

}

}

}