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by GraalVM has released major version 21.0 with a new component, Java on Truffle, that provides a Java Virtual Machine (JVM) implementation written in Java. GraalVM is itself a polyglot virtual machine that provides a shared runtime to execute applications written in multiple languages like Java, Python, and JavaScript. Prior to this release, running Java applications in GraalVM was possible by using the Java HotSpot VM with the GraalVM Just-In-Time (JIT) compiler, or by compiling to a native e...

Up until now, GraalVM has offered two ways to run Java programs: using the Java HotSpot VM with the GraalVM JIT (just-in-time) compiler, and compiled to a native executable using GraalVM Native Image. Today, we’re happy to announce a new way to run Java on GraalVM. GraalVM 21.0 introduces a new installable component, named espresso, which provides a JVM implementation written in Java. Java on Truffle place in the GraalVM architecture Espresso makes it possible to run Java code via the Tru...