This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
To include your JAR in the classpath,
1. Right-click your project, select Properties.
2. Select Java Build Path -> Libraries
3.1 If your JAR is in your project directory structure, click "Add JARs..."
3.2 If not, click "Add external JARs..."
4. Select your JAR, click open, click ok.