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.
Check out the MANIFEST.MF file inside the JAR file (use a ZIP tool to open the JAR). Check out what the Class-Path is. That's relative to the JAR file itself. I think you copied the JAR file but forgot to copy some of the JAR files it needs.