Hello.

Code optimization is crucial, especially for critical sections of an application. Before jumping into optimization, profiling is essential to pinpoint actual bottlenecks. Relying on assumptions can lead to wasted effort on non-critical areas. While I haven't personally experienced the Java-specific examples mentioned in the linked article, the core message about profiling holds true regardless of the programming language.

I had a comprehensive blog post on sealed classes and their benefits within Google Search, but unfortunately, it was lost. I plan to rewrite it soon.