This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
There is no expiry time limit for the certification that you earn. Since each certification comes with version along with it (SCJP 1.4), Sun has put no restrictions for the validity of the certifications.
However, it is up to us to get upgraded to the latest version exam. Upgrade exams are specifically meant for this.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com