HotSpot
- This page is about Sun's Java virtual machine. For other uses, see Hotspot.
HotSpot is the primary Java Virtual Machine for desktops and servers produced by Sun Microsystems. It was originally developed by a small startup company (also responsible for Strongtalk) which was bought up by Sun.
In Sun's JRE, it consists of two interchangeable versions, one called Client and the other Server. The Client version is tuned for quick loading and compliation of essential classes and methods only. The Server version loads slower but puts more effort into producing highly optimized JIT compliations that yield higher performance. Both use dynamic compilation and are usually amongst the top of their class of JVMs.