Why does one piece of code scream while another crawls? In this high-energy, hands-on workshop, we’ll peel back the layers of modern CPUs and show how Java code can be tuned to dance with the hardware. Whether you’re a seasoned professional, a fresher, or a Java enthusiast, you’ll gain practical skills to unlock performance. Together we’ll explore Caches :brain:, Branches :twisted_rightwards_arrows:, and SIMD :zap: through live coding, real benchmarks (JMH), profiling (JFR/VisualVM), and the blazing speed of the Panama Vector API. Small code changes, massive speedups — come ready to experiment and supercharge your Java!