Question

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

Answer 1

Answer:

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 = <Reference to Object to be serialized> ;

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

                 ObjectOutputStream ostream = new ObjectOutputStream(out);

                  ostream.writeObject(r);

                 ostream.close();

            } catch(Exception e){

                   e.printStackTrace();

            }

      }

}