This week's book giveaway is in the Java 9 forum. We're giving away four copies of Java 9 Modularity: Patterns and Practices for Developing Maintainable Applications and have Sander Mak & Paul Bakker on-line! See this thread for details.
Not something you can do. Hibernate is designed to work with relational data sources. Excel is not a relational data source, so Hibernate is not an appropriate tool to be using. Have you looked at Apache POI?