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by Scarbutt 1328 days ago
My experience has involved zero headaches

How? most libs use reflection.

3 comments

GraalVM comes with its own JIT the Graal Compiler [1] which I believe was what metadat was talking about. You are probably thinking about the native image generation which can cause issues with reflection and other dynamic constructs.

[1] https://www.graalvm.org/22.3/reference-manual/java/compiler/

Reflection only matters if you are using graal for AOT. It's still a full JVM.
Also, reflection is supported in AOT mode. The analysis, however, does require reachability metadata in some cases. In the best case, libraries provide and maintain appropriate configuration for this. Reachability metadata can also be shared via https://github.com/oracle/graalvm-reachability-metadata.
There's two pieces to GraalVM:

1. The new JIT

2. The Native Image, AOT

Reflection is an issue for (2), not (1).