Sometimes situations arise where you must replace or patch an application class. In this article, an excerpt from Covert Java, Alex Kalinovsky explains what circumstances warrant such an approach ...

Foundation classes are just what the name says, the very foundation on which information technology (IT) professionals are creating their next generation of enterprises to run business systems. ...

Sealed classes make Java an even more powerful and expressive language and set the stage for even more sophisticated techniques such as pattern matching, which we'll explore in a subsequent article. A ...