What Is HotSpot JVM

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∟What Is HotSpot JVM

This section describes what is HotSpot - A Java Virtual Machine (JVM) originally developed by Sun Microsystems and now supported by Oracle Corporation.

What Is HotSpot? HotSpot, also called Java HotSpot Virtual Machine, or HotSpot JVM, is an implementation of the JVM (Java Virtual Machine) Specification originally developed by Sun Microsystems and now supported by Oracle Corporation.

HotSpot has key feature called adaptive compiler that application code will be analyzed as it runs to detect performance bottlenecks, or "hot spots". HotSpot will then compile those hot spots for a boost in performance.

There are two implementations of the HotSport:

Java HotSpot Client VM
Java HotSpot Server VM

The main differences of the two implementations are:

The Client VM has been specially tuned to reduce application start-up time and memory footprint, making it particularly well suited for client environments.
The Server VM has been specially tuned to maximize peak operating speed. It is intended for running long-running server applications, for which having the fastest possible operating speed is generally more important than having the fastest possible start-up time.