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A Java geek

Measuring execution time in Java can be done through multiple approaches: the basic System.currentTimeMillis() API, object-oriented wrappers like Guava's or Apache Commons' Stopwatch classes, functional programming patterns using Function and Consumer interfaces, or annotation-based solutions with compile-time or runtime bytecode manipulation. Each approach has trade-offs in complexity and flexibility, with the basic and OOP options being straightforward while annotations require more infrastructure but enable declarative timing.

JVM timing options