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.
In a properly written JDBC driver, Connection.close() will close any open Statement or ResultSet objects that were opened on that Connection, before closing the connection itself. ResultSet.close() will merely close the ResultSet, leaving open any Statement or Connection above it.