A review of BEA WebLogic 6.0 application server. It discusses its features and enhancements from previous versions. By Tim Fielden, JavaWorld.

Review by Brian Goetz of Java World praising the open-source search engine.

The thread gate pattern is an effective tool for managing thread concurrency, but not many developers know about it. Introduces the concept of thread gates, and then shows how to implement them in a multithreaded prime-number generator.

Though many Java books and articles recommend double-checked locking, unfortunately, it is not guaranteed to work in Java.

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.

Explains how to fix the double-checked locking idiom by using thread-local variables and takes a look at its performance.

Explains how to apply consistent rules for acquiring multiple locks simultaneously, to reduce the likelihood of synchronization deadlocks.

Gives an introduction to threads and explores the Thread class and runnables.

Discussion of two more architectural solutions to threading problems: a synchronous dispatcher (or 'reactor') and an asynchronous dispatcher (or 'active object').

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