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Java 27 and 26: runnable demos and captured output for every JEP, plus version lanes

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Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01B38FGKKam5SCGgwgduVAh3
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asmhatre
2026-09-21 15:08:50 +00:00
committed by Claude
co-authored by Claude Sonnet 5
commit f59c1de96d
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docs/output/71-aot-cache-matrix.txt
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# JEP 516: can the cache's archived heap objects be used? One row per (JDK, GC the cache was built under, GC at run time).
# 'heap objects' = the log says the archived module graph was used; 'unusable' = the JVM refused the whole cache.
JDK 25 cache built under G1 run under Serial -> heap objects used (full module graph: enabled)
JDK 25 cache built under G1 run under G1 -> heap objects used (full module graph: enabled)
JDK 25 cache built under G1 run under Z -> unusable: saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime
JDK 25 cache built under Z run under Serial -> unusable: saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime
JDK 25 cache built under Z run under G1 -> unusable: saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime
JDK 25 cache built under Z run under Z -> cache used, heap objects NOT used (full module graph: disabled)
JDK 26 cache built under G1 run under Serial -> heap objects used (full module graph: enabled)
JDK 26 cache built under G1 run under G1 -> heap objects used (full module graph: enabled)
JDK 26 cache built under G1 run under Z -> unusable: saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime
JDK 26 cache built under Z run under Serial -> unusable: saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime
JDK 26 cache built under Z run under G1 -> unusable: saved state of UseCompressedOops and UseCompressedClassPointers is different from runtime
JDK 26 cache built under Z run under Z -> heap objects used (full module graph: enabled)
JDK 27 cache built under G1 run under Serial -> heap objects used (full module graph: enabled)
JDK 27 cache built under G1 run under G1 -> heap objects used (full module graph: enabled)
JDK 27 cache built under G1 run under Z -> unusable: saved state of UseCompressedOops (1) is different from runtime (0)
JDK 27 cache built under Z run under Serial -> unusable: saved state of UseCompressedOops (0) is different from runtime (1)
JDK 27 cache built under Z run under G1 -> unusable: saved state of UseCompressedOops (0) is different from runtime (1)
JDK 27 cache built under Z run under Z -> heap objects used (full module graph: enabled)