All classes in Java TM technology are directly or indirectly derived from the Object class. Some of the subclasses of Object class are - Boolean, Number, Void, Math, String, StringBuffer etc. Some of ...

Sealed classes in Java let developers limit the creation and use of subclasses and preserve the class hierarchy. Here is how sealed classes in Java work.

Although the Java extension mechanism and the classpath mechanism are both used in Java class loading, there are some important differences between them. Unpack the Java extension mechanism and ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

At his personal blog Webmink, Sun's chief open source officer, Simon Phipps, complained Sunday that Google is not supporting all Java classes in its App Engine. He even linked to Google's list of ...

He has led software development projects to build enterprise-class software applications and has extensive experience with Java and Perl. He is the author of several Java books, including one called ...