various updates to JDK compat guide #3230
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| JDK 8 users typically use the Oracle JDK or some flavor of OpenJDK. | ||
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| Most JDK 11+ users are using OpenJDK, or GraalVM which runs in the context of OpenJDK. GraalVM performs well on the Scala benchmarks, and it benefits from GraalVM runtime and runs faster too. | ||
| Most JDK 17+ users are using OpenJDK, or GraalVM which runs in the context of OpenJDK. GraalVM performs well on the Scala benchmarks, and it benefits from GraalVM runtime and runs faster too. |
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We should no longer recommend GraalVM?
https://blogs.oracle.com/java/post/detaching-graalvm-from-the-java-ecosystem-train
Oracle JDK 24 was the final release to include the experimental and optional Graal JIT
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GraalVM users interested in Java technology are encouraged to transition to Oracle JDK or Oracle OpenJDK
I think the recommendations below (Temurin and Zulu) are still the right ones.
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okay I've removed the GraalVM stuff
| | 17 (LTS) | 3.0.0 | 3.3.0 | 2.13.6 | 2.12.15 | | | ||
| | 11 (LTS) | 3.0.0 | 3.3.0 | 2.13.0 | 2.12.4 | 2.11.12 | | ||
| | 8 (LTS) | 3.0.0 | 3.3.0 | 2.13.0 | 2.12.0 | 2.11.0 | | ||
| | JDK | 3.8* | 3.4+ | 3.3 LTS | 2.13 | 2.12 | |
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I find the 3.4+ column confusing, because it lists versions like 3.0.0 and 3.7.1. Also I'm not sure this table has the right format to fit in the information about 3.8 requiring Java 17.
Maybe leave it as is, and move the existing note that 3.8 requires Java 17 closer to the table / somewhere more prominent?
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I've fixed the "3.4+" column.
But I don't understand what the problem you see with the 3.8 column?
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The table is "minimum Scala versions" (that works on some Java version) but for 3.8 it's actually about "minimum Java version" (required for some Scala version), I guess that mix confuses me a bit
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I have chosen not to add a JDK 26 row yet, as it's still so early in the JDK 26 cycle.