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VOL. I·NO. 01
WEDNESDAY, SEPTEMBER 30, 2026
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  1. 001Hacker NewsSEP · 29English

    Performance Improvements in JDK 27

    JDK 27 delivers over 2,300 commits with performance improvements across libraries, garbage collectors, JIT compiler, and runtime. Key features include Compact Object Headers enabled by default, G1 as the default garbage collector, and optimizations to HashMap bulk copies, AttributedString, URL.toString(), and file I/O operations, with reported improvements ranging from 35% to 86% in specific benchmarks.

    By Per-Ake Minborg; Claes Redestad