This week's book giveaways are in the iOS and Features new in Java 8 forums. We're giving away four copies each of Barcodes with iOS: Bringing together the digital and physical worlds and Core Java for the Impatient and have the authors on-line! See this thread and this one for details.
Yes, both contain the same content. We have tried to make it clear on Amazon's product page as well, which says:
IMPORTANT: This is an eBook version of Enthuware's simulator JA+ V7 for OCA-JP 7 Certification. It contains the same questions as the simulator. If you are not comfortable with the formatting of this eBook, you may want to try the software version from Enthuware.com, which is available for the same price and is updated automatically on a regular basis.