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.
A lightweight component is one that subclasses java.awt.Component (or java.awt.Container) directly - implementing the look-and-feel of the component in Java rather than delegating the look-and-feel to a native peer. Lightweight components can be more efficient at utilizing system resource, they can be transparent, and they do not have to be rectangular (all of which are limitations when working with components that have a peer).