This "stupid question" is about calling a superclass' constructor in your subclass' constructor and why you can only do it in your first statement.
Thomas Kuenneth shows how to implement JSR-223 to make scripting languages accessible from Java.
Robert Miller spells out the practices that will keep your code understandable, maintainable, and extensible.
David E. Karam introduces a robust content management system, Current CMS, recently open-sourced on java.net.
This "stupid question" is about the use of the "Java" name in open-source projects, Web sites, companies, and more.
Brian Agnew introduces JXPath, which allows you to use an XPath-style syntax to locate and retrieve objects from deeply-nested structures.
This "stupid question" is about about questions themselves: Where is the best place to go for answers to Java questions?
Stephen B. Morris shows how to use aspect-oriented programming (AOP) to provide internationalization of existing code.
Johannes Broadwall looks at how to implement lazy loading--objects that don't contain all of their data until they need to go get it.
S. E. Morris pushes the client-side features of the Google Web Toolkit by creating client-only apps that use scrolling, animation, mouse tracking, and more.