Serialization and Deserialization

1. Serialization is the process of transforming an in-memory object to a byte stream. 
2. An object is serialized by writing it to an ObjectOutputStream. 
3. Serialization Code 

           FileOutputStream out = new FileOutputStream("test.txt" );
           ObjectOutputStream oos = new ObjectOutputStream( out );
           oos.writeObject(new String ());
           oos.close ();

1. Deserialization is the inverse process of reconstructing an object from a byte stream to the same state in which the object was previously serialized. 
2. An object is deserialized by reading it from an ObjectInputStream.
3. Deserialization Code

FileInputStream in = new FileInputStream( "test.txt" );

ObjectInputStream ois = new ObjectInputStream( in );

String s = (String) ois.readObject();

ois.close();