Double-Checked Locking

A very good explanation of double check locking in java by David Bacon, @see

synchronization and java memory model(by Doug Lea)

Very good explanation of Doug Lea about synchronization and java memory model, @see

Analyzing Java Application Problems

Analyzing Java Application Problems By Sathish Santhanam
— "This article discusses troubleshooting techniques for Java applications by analyzing Java thread dumps. We can use thread dumps to analyze situations like application hang, poor application response times, and application crash. Before getting into the details of analyzing the thread dumps, let's look briefly at the thread dump itself."