This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
hi In Serialization there is a default implementation for the serialization process,the class itself take care of that. In externalaization User can implement their own way of serialization process using readExtern() and writeExtern() method.