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JDK 27 became GA on 15 Sep 2026 with binaries from Oracle. It ships default G1 GC, post‑quantum TLS key exchange, default compact object headers, and several preview features such as structured concurrency and lazy constants.
Rheinmetall has open‑sourced onboardapi 9.10.0, a C++ middleware that uses DDS (XTypes, XCDR2) for low‑latency, backward‑compatible data exchange between sensors and software. The library includes Java, C#/.NET, and Python wrappers and comprehensive docs.
A user praises Crap4J, an old Java code quality tool, for effectively identifying "dangerous" code without false positives, unlike other coverage tools. They note its age and incompatibility with Java 7, urging for updates.
Java 27 ships with nine JEPs—G1 as the default GC, post‑quantum TLS 1.3, lazy constants, primitive‑type patterns, structured concurrency, compact object headers, JFR redaction, Vector API incubator, and PEM encoding preview—plus the first Java Verified Portfolio releases (Helidon 27, JavaFX 27, Jipher 20). The release is a security‑focused, non‑LTS update that paves the way for Project Valhalla f…
Codename One introduced an experimental native Java backend that compiles Java controllers to a tiny native executable via ParparVM. Benchmarks show sub‑millisecond startup, 10‑40 MiB memory, and up to 20 % higher request throughput than a Go fasthttp server.
ParparVM’s HashMap suffered catastrophic miss latency due to linear probing on dense integer keys. By adopting CPython‑style perturbed probing (Swiss‑table style) and extending tagged immediate values to more primitives, miss latency dropped from 32 s to ~45 ms, allocation pressure fell dramatically, and overall performance stayed roughly flat despite a modest hit‑time slowdown.
Yelp added an Inference Plugin to Nrtsearch that runs XGBoost and neural‑network models inside the search engine, eliminating a separate scoring service. The plugin extracts features from index documents, loads MLeap bundles from MLflow, and serves predictions on replica nodes with millisecond latency.
Codename One introduces a backend runtime allowing a single Java model to define entities and validation rules for both client applications and the server. This approach aims to reduce duplication and ensure consistent data rules from the app to PostgreSQL.
Codename One replaced its Javadoc‑generated site with a Hugo‑based pipeline: a custom doclet emits one Hugo content file per Java type, preserving Markdown comments, generating a lightweight search index, and keeping the traditional offline Javadoc archive. The approach reduces index size (1.9 MB → 341 KB gzipped), retains existing anchors, and can be reused for other Java projects.
InfoQ’s Java roundup lists the GA release of JDK 27, early‑access build 16 of JDK 28, BellSoft’s Liberica JDK 27, Jakarta EE 12 updates, Open J Proxy 1.0 (with JDBC cache and HikariCP leak detection), A2A Jakarta 1.0, Azul Payara 7.4.0 (MicroProfile 7.1, OpenTelemetry migration), JHipster 9.4 (Playwright, esbuild), Ktor 3.6 (OIDC auto‑discovery), BoxLang 1.17 (module service, syntax checker) and…
Codename One reduced startup latency and JavaScript overhead by publishing screen state atomically, indexing style lookups, avoiding unnecessary artwork generation, and refining suspension analysis, yielding measurable speedups.
ParparVM’s GC was tuned by lowering the allocation‑trigger floor, adding configurable thresholds, parallel marking, mutator assistance, and proper weak/soft reference handling. These changes cut RSS from 98 MB to 38 MB, reduced worst‑case GC pauses from seconds to sub‑second, and improved cache hit rates with a recency‑based eviction policy.
Codename One engineers dissect why benchmark numbers can be misleading, then share concrete work on GC tuning, proper weak/soft references, and a new probing sequence for their open‑addressed HashMap that cuts miss‑probe counts from >16 k to ~1.5 per lookup.
Codename One now supports native desktop windows for dialogs, fixing a bug where dialogs appeared on the wrong surface in multi-window applications. This allows dialogs to participate correctly in desktop window ordering and focus, with options for global or per-instance native mode.
Codename One now supports true native desktop windows via a new `Window` class that separates per‑surface state (paint queue, input routing, native peers) from the global `Display`. The change adds a `PaintSurface` abstraction, platform‑specific window back‑ends (AWT/Swing, Direct2D, GTK, UIWindowScene), and a migration path for components that assumed a single `Form`. Initial release has some UI…
Codename One is moving its Maven artifacts from Sonatype’s Maven Central to a self‑hosted Cloudflare R2 bucket. Phase 1 reduces release payloads (from 229 MB to 77 MB) by dropping fat‑JARs and freezing stable deps, adds dual‑publish, and updates generated POMs to include a custom repository for both dependencies and plugins. After a three‑week observation window (ending Aug 28 2026) new releases…
Codename One 8.0 adds two user‑experience primitives: **Cross‑Device Continuity** (state checkpointing + Apple Handoff + custom HTTP relay) and **Native Drag‑and‑Drop** (OS‑level drag using the same ClipboardContent model). The post shows the API (StateProvider, Continuity.checkpoint, NativeDragOperation), platform support tables, and practical advice on payload size, security, thread handling, a…
Codename One moved 87 common build hints into Java annotations, so misspelled keys or wrong value types cause compile‑time errors instead of silent build‑server ignores. The annotations are processed back into the existing string protocol, keeping backward compatibility while improving validation and IDE support.
Codename One adds @AppIntent annotations that let a static Java method be exposed as a Siri, Spotlight, or Android shortcut. The build‑time processor generates native declarations, a reflection‑free dispatch table, and validates the intent metadata. Handlers can be headless, accept typed parameters, return results, and be invoked internally via Intents.invoke(). Entities enable system‑driven disa…
Codename One adds a portable Java API that abstracts HomeKit, Matter, and Google Home into a unified trait‑based model. The library handles platform differences, partial read/write results, and OS‑driven commissioning.
FileInputStream and FileOutputStream implement finalize, which forces objects onto the finalizer queue and can cause long GC pauses in programs that open many files. Switching to Files.newInputStream and Files.newOutputStream (Java 7+) eliminates the finalizer overhead and improves I/O‑heavy workloads.
Codename One adds a cloud‑side hardening step that runs on the merged JAR before it is split into Android, iOS, JavaScript, and desktop binaries. It can rename symbols, encrypt string literals, and insert opaque‑predicate control‑flow guards at configurable levels (off → standard → aggressive → paranoid). The transforms are selective per platform to avoid breaking optimizers, and a mapping is kep…
Codename One’s third‑generation GUI Builder turns the editor into a Maven‑aware project workspace: it scans all `.gui` files, shows live CSS, and protects generated Java regions, keeping Steve Hannah’s guided `LayeredLayout` model while eliminating per‑form editor launches.
App Shield moves device‑integrity checks from the client to the server by obtaining a short‑lived ES256 attestation token from Apple App Attest or Google Play Integrity, verified by Codename One’s service, and required by the backend for protected API calls.
Codename One adds a portable routing API (com.codename1.maps.routing) that separates route discovery from map rendering, offering a simple two‑line `showRoute` helper and a full callback‑based flow for custom UI, multiple alternatives, waypoints, and encoded polylines. The default service uses OSRM (no API key), but the design lets you plug any provider or self‑hosted engine via a `RouteService`…
AWS’s weekly roundup (Sept 21 2026) bundles a set of product announcements: the Builder Center mobile app (iOS/Android) for browsing courses and workshops; Amazon Connect Talent GA (AI‑driven hiring); Corretto 27 GA (OpenJDK 27 with G1 GC, post‑quantum TLS, compact headers, JFR redaction); Kimi K3 on Bedrock (2.8 T‑param open LLM with vision and 1M‑token context); new T8i burstable EC2 instances…
