HotSpot : Java Glossary

HotSpot

Sun’s JIT (Just In Time) part of the JDK (Java Development Kit). Code runs first in interpreted mode and is then analyzed and compiled optimized to target platform. It aggressively in-lines frequently used methods, then uses traditional optimisation techniques on the larger code chunks. The HotSpot compiler builds heavily on work done in a PhD thesis by Henry Massalin. The thesis is the mother of all self-modifying code. You not only optimise, you continuously re-optimise.

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