jvm

A detailed guide on setting up Emacs Eglot for Scala and Kotlin development, offering a lightweight alternative to IntelliJ IDEA with custom LSP configurations.

This article explains how HotSpot's C2 JIT compiler uses a 'known bits' abstraction to track which bits of an integer are definitely zero or one, enabling optimizations like eliminating redundant bitwise AND operations.

JEP 539 introduces strictly-initialized fields in the JVM as a preview feature, requiring fields to be initialized before reading to avoid default values like 0 or null. This provides stronger integrity guarantees for JVM-based languages.

A thread listing 10 essential Java concepts for 2026, covering JVM memory model, concurrency, collections, I/O, exceptions, performance, tooling, debugging, security, and observability.

Project Valhalla's JEP 401 (Value Classes and Objects) has been integrated into the OpenJDK main repository, targeting JDK 28, marking a major milestone after a decade of development.

This article details how Clojure, with the JVM's Vector API and careful optimization, achieved frame rates within 20% of C for a 3D stress test, demonstrating that a dynamic language can approach low-level performance on hot loops.

This master's thesis at Uppsala University, done in collaboration with Oracle, investigates reducing the overhead of weak reference processing in the ZGC garbage collector by proposing three pipeline modifications and an alternative annotated-field mechanism.

rustc_codegen_jvm is a custom Rust compiler backend that emits JVM bytecode, allowing Rust code to be compiled into runnable JAR files compatible with JVM 8+. It supports a wide range of Rust features including control flow, data structures, traits, and closures.

H2JVM is a Haskell library that allows developers to write JVM bytecode directly in Haskell, enabling low-level JVM manipulation.

QuestDB engineers debug a sporadic Windows hang caused by a deadlock involving the Windows DLL Loader Lock, Rust thread-local storage destruction, JNI detach, and JVM garbage collection safepoint mechanics.