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A Guide to GraalVM
GraalVM is a high-performance Java Development Kit (JDK) built on the powerful HotSpot Virtual Machine (VM). It can compile Java programs into standalone native executables, eliminating the need for a JDK installation to run them. This not only boosts performance but also simplifies distribution. It combines the best of traditional JDK setups with innovative enhancements and much more. This guide explores how you can run Java programs on GraalVM without changing any code, using all your usual tools and libraries seamlessly.
By converting these Java bytecode formats into native executables, the native-image tool enables your applications to run directly on your operating system, bypassing the need for the JVM and thereby enhancing performance and reducing startup times. The native image typically has faster startup times and lower memory usage but might sometimes be slower for long-running, computationally intensive tasks due to the lack of JIT optimizations. In this chapter, we'll explore how to leverage GraalVM to build a native executable from a JAR file, specifically focusing on developing a Spring Boot web application.
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