Java's success, and Sun's control of it, prompted Microsoft to respond with C# initiative. In many ways C# blends power of C++ and Java's built-in protections. Java fans should learn C# pros, cons, and how it may affect Java future. [JavaWorld] 1, 600...

Jacek Kruszelnicki discusses the issues encountered with persistence, presents traits for an ideal persistence layer, and reviews available JDO solutions.

This article presents two major JDO specifications: the Sun Microsystems JDO and the open source Castor JDO. Jacek Kruszelnicki discusses their relative pros and cons, and their similarities and differences.

Discusses the things you need to know to program threads in the real world. This article assumes you understand the language-level support for threads and focuses on the legion of problems that arise when you try to use these language features.

Discusses the perils that can arise when you approach multithreading in a naive way.

Looks at how and why you might want to roll your own exclusion semaphores, and presents a lock manager that will help you safely acquire multiple semaphores.

A condition variable adds to wait the ability to not wait when the condition you're waiting for has already taken place; and a counting semaphore lets you control a pool of resources without sucking up machine cycles in polling loops.

Timers let you perform fixed-interval operations, such as animation refreshes.

How to implement the Observer pattern (used by AWT/Swing for its event model) in a multithreaded environment.

Reader/writer locks let multiple threads safely access a shared resource in an efficient way.