Complete the following procedure to compile and run this example:
From yourbasedir/objectserializationexamples/ExternalizableSuperclass,
compile the Savesuper.java file using JDKTM
1.1 or higher:
javac Savesuper.java
Run the file you just compiled: java Savesuper
The original book object is printed (showing the object before
serialization) and then the new book object is printed (showing the
object after serialization).