This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
You have to declare you class to implement Cloneable. You also have to provide a public Object clone() method (or public MyClass clone()). That method should use super.clone() to create a new object, and then do any additional tweaking necessary, such as deep-copying mutable fields if desired.