Jeandle is an open‑source LLVM‑backed JIT compiler for the JVM released by Ant Group, designed to bring LLVM’s high‑performance optimizations to Java, with a detailed roadmap, technical overview, and public GitHub repositories for developers to explore.
Jeandle is a new open‑source JIT compiler for the JVM, built by Ant Group on LLVM, which brings LLVM’s performance and ecosystem advantages to Java, explains JIT and LLVM basics, outlines its architecture, future roadmap, and provides GitHub links for the project.
Jeandle, an open‑source JIT compiler built on LLVM, introduces LLVM’s performance and modularity to the OpenJDK HotSpot JVM, explains core concepts of JIT and LLVM, outlines technical challenges, and presents a roadmap toward full bytecode support and advanced optimizations.
Jeandle, the newly open‑sourced LLVM‑based JIT compiler from Ant Group, combines JVM and LLVM strengths to dramatically boost Java execution speed, explains JIT and LLVM fundamentals, outlines its architectural advantages, and details an ambitious roadmap toward full bytecode support and advanced optimizations.
Jeandle, an open‑source JVM JIT compiler from Ant Group, leverages LLVM's modular optimization and code‑generation capabilities to bring unprecedented performance to Java applications, outlining its architecture, core concepts, and ambitious roadmap for future enhancements.
This article introduces ten widely used Alibaba‑developed Java tools—including the Java Initializr scaffolding service, Arthas diagnostic utility, Dragonwell JDK, code‑style scanner, ARMS monitoring platform, PTS performance tester, AHAS high‑availability suite, EasyExcel, HandyJSON, and the Druid connection pool—highlighting their features, use cases, and links to official sites.
Recent Dimensional Research data shows that 73% of surveyed enterprises have encountered Oracle‑initiated Java license audits, prompting 15% to complete migration, 22% to start, and 25% to plan moving to OpenJDK or other open‑source JDKs, driven by cost and compliance pressures.
An in‑depth comparison of Oracle JDK and OpenJDK covers their origins, licensing, feature sets, release cycles, performance benchmarks, security updates, and practical migration guides, helping developers choose the right JDK for production environments and avoid costly legal or stability pitfalls.
A recent global survey of 500 IT asset managers reveals that 73% of enterprises faced Oracle Java compliance audits, with many spending over $500,000 annually on licensing issues, prompting a massive shift toward open‑source Java alternatives like OpenJDK.
Jeandle, the new open‑source JVM JIT compiler from Ant Group, uses LLVM to bring advanced optimization and code generation to Java, promising dramatic performance gains and a roadmap that includes full bytecode support and cutting‑edge Java‑specific optimizations.
This article curates ten widely‑used Alibaba internal developer tools—ranging from Java scaffolding, online diagnostics, and OpenJDK distribution to code quality plugins, real‑time monitoring, performance testing, high‑availability services, Excel handling, Swift JSON parsing, and a robust JDBC pool—highlighting their features and practical usage scenarios for external developers.
A recent Azul Systems survey reveals that over 80% of Oracle Java users are migrating to OpenJDK or commercially‑supported OpenJDK distributions to reduce costs, avoid licensing uncertainties, and gain more flexible, open‑source Java solutions, with most migrations completing within a year.
This article traces the evolution of Java string concatenation from the simple '+' operator through JDK 8’s StringBuilder implementation, the JDK 9+ StringConcatFactory with invokedynamic, and Alibaba’s PR 20273 that introduces hidden‑class bytecode generation, highlighting performance gains and startup‑time improvements.
A 2023 survey of 663 Java professionals reveals a sharp decline in Oracle Java's market share, with 86% planning or already migrating to OpenJDK alternatives due to cost, licensing uncertainty, audit risk, and a preference for open‑source solutions, while highlighting migration timelines, satisfaction, and emerging pricing models.
A recent Azul survey of 663 Java professionals shows that 86% of Oracle Java users are migrating to OpenJDK due to high costs, licensing uncertainty, audit risks, and a preference for open‑source alternatives, with most migrations completing within a year and delivering significant cost savings.
A market study reveals that rising Oracle Java subscription costs are driving many users to migrate to OpenJDK, and this guide explains the reasons behind the shift and provides step‑by‑step instructions for removing Oracle JDK and installing OpenJDK.
The team successfully employed eBPF dynamic tracing to obtain full Java call‑stack traces from any point in an OpenJDK 8 JVM process with microsecond‑level overhead, without requiring any JVM agents, bytecode injection, or code modifications, making it suitable for production environments.
The 2023 State of Java report, based on a survey of over 2,000 Java professionals, reveals that Java adoption stays strong with most companies using LTS versions, migrating to the cloud, confronting rising costs and security challenges, while Oracle's market share declines in favor of OpenJDK alternatives.
The default Java object hashCode() implementation is immutable and unchanged by garbage collection, while custom overrides must keep contributing fields constant to avoid map errors, and the OpenJDK native implementation stores the hash in the object header using a Marsaglia XORshift algorithm.
Oracle’s aggressive shift to a per‑employee Java SE subscription has sparked widespread concern among enterprises, as the new pricing tiers and licensing audits threaten to dramatically increase costs and force companies to reconsider their Java deployment strategies.
Oracle's recent shift to a subscription-based Java SE licensing model, featuring employee‑count pricing tiers and aggressive email outreach, has sparked widespread concern among enterprises, prompting costly compliance challenges, discussions of alternative OpenJDK adoption, and calls for careful negotiation with Oracle.
Tencent has donated its high‑performance OpenKona JDK compiler to the Open Atom Open‑Source Foundation, offering up to 15% better performance than standard OpenJDK and supporting domestic CPUs and operating systems, making it a significant contribution to the Java ecosystem.
Java 21, slated for release on September 19, 2023 as the next LTS version after Java 17, will drop the experimental Generational Shenandoah garbage‑collector feature during its Ramp‑down phase due to insufficient readiness, with the change slated for removal by the June 14 review deadline.
Tencent has donated its high‑performance OpenKona JDK to the Open Source China foundation, offering the full source code, build infrastructure and national‑cryptography support, and already powers over a million servers across more than 120 companies, promising a domestic alternative for Java development in big‑data, AI and cloud scenarios.
This article dives deep into the OpenJDK G1 FullGC implementation, explaining its architecture, trigger conditions, preparation steps, and the four‑phase collection process while comparing single‑threaded and multi‑threaded implementations in JDK 8 and JDK 11, and highlighting code paths that can cause long GC pauses.
This roundup covers the latest Java developments, including JEP 434’s move to candidate status, second‑preview updates for virtual threads and structured concurrency, the JDK 20 release schedule, and new releases across Spring, GraalVM, Open Liberty, Vert.x, TomEE, JReleaser, Hibernate, PrimeFaces, JDKMon, and EclipseCon.
This article explains what the Java Development Kit (JDK) is, outlines the history of Java SE releases, and compares Oracle JDK with the open‑source OpenJDK in terms of release cycles, licensing, performance, and feature differences.
OpenJDK plans to introduce universal generics to Java, allowing both reference and primitive types to be treated uniformly through three JEPs, a change that will take several years to implement but promises to enhance language flexibility without sacrificing primitive performance.
The Eclipse Foundation has launched the Adoptium Marketplace, a vendor‑neutral online hub offering TCK‑certified, AQAvit‑verified OpenJDK‑based Java SE binaries optimized for cloud‑native and enterprise deployments, while highlighting the rapid growth and quality challenges of the Java runtime ecosystem.
This article explains that Oracle JDK and OpenJDK share the same HotSpot VM codebase, with only a few private Oracle components such as Java Flight Recorder and specific platform ports, and highlights differences in packaging, historical version sync, and minor feature gaps.
Michael Rasmussen of JRebel discusses Java’s accelerating development, the shifting OpenJDK LTS cadence, adoption trends for Java 8 and 17, upcoming features in Java 18‑19, the future impact of the Valhalla project, and how microservice frameworks and IDE preferences are shaping the Java ecosystem in 2022.
Oracle has begun auditing Java usage across enterprises, introducing paid licensing models for Java SE, offering a limited free tier for Java 17, and prompting many companies to switch to OpenJDK to avoid compliance penalties and costly subscriptions.
This roundup covers recent Java ecosystem developments, including the promotion of the Value Objects (Preview) JEP to candidate status, release notes for JDK 18 and early‑access JDK 19 builds, multiple Spring project updates such as Spring Boot 2.7.0‑M1, Spring Data 3.0‑M2 with ListCrudRepository, Spring Security enhancements, as well as Quarkus 2.7.2.Final and a new early‑access version of JReleaser adding Windows resources to jpackage.
Bisheng JDK is Huawei's customized OpenJDK distribution offering high‑performance, production‑ready Java runtime optimized for ARM, compatible with Java SE 8, supporting Linux/AArch64, and featuring JFR and a fast serializer with specific JVM options.
This article introduces Huawei's open-source Bisheng JDK 8, outlines its supported features such as Flight Recorder and fast serialization, provides step‑by‑step installation instructions for Linux/AArch64, and shares the project repository and related interview resources.
JDK 17, the next long‑term support release of Java, entered its final release‑candidate phase with build 35 and brings a host of enhancements—including stricter floating‑point semantics, sealed classes, pattern‑matching for switch, a new RandomGenerator API, and a modern Metal‑based rendering pipeline—while deprecating legacy APIs such as the Security Manager and Applet.
Following the US Supreme Court's decision that Google's use of Java APIs in Android is lawful, Microsoft announced the preview of its Microsoft Build of OpenJDK, a free, long‑term‑support Java distribution aimed at Azure users and developers.
On July 15, the OpenJDK Management Committee announced the formation of a new Client Libraries Group while dissolving key Java desktop projects—including AWT, 2D, Swing, Sound, Harfbuzz, Framebuffer Toolkit, and XRender Pipeline—leaving OpenJFX as the sole supported desktop platform.
The 2021 JVM ecosystem report, based on responses from over 2,000 Java developers worldwide, shows OpenJDK now dominates with 77% market share, Java 11 surpasses Java 8 in production, Kotlin gains traction, IntelliJ IDEA leads IDE usage, and Maven remains the top build tool.
Microsoft recently released the preview of its Build of OpenJDK, a free, long‑term support Java distribution that includes Java 11 binaries for x64, macOS, Linux, and Windows, with early‑access builds for Java 16 on ARM, and plans to make it Azure’s default Java 11 runtime by year‑end.
This article compiles the most frequently asked questions about OpenJDK, covering Oracle's open‑source strategy, licensing details, compatibility testing, contribution guidelines, and the relationship between OpenJDK and Oracle JDK, providing clear answers for developers and organizations.
The article reports Java 16’s official release, reveals that 1,897 JDK issues were fixed worldwide—with Oracle handling 1,397 and major contributions from Red Hat, SAP, Tencent and ARM—highlights Tencent’s open‑source Kona JDK 11, and invites readers to vote on the strongest Chinese Java company.
The article explains why many developers continue to use Java 8, detailing Oracle's post‑8u211 commercial licensing, the last free JDK builds, the role of OpenJDK, and how to locate the final free Oracle JDK 8 version.
Java 16 has been officially released, bringing 17 major enhancements—including new language features like pattern matching for instanceof and records, JVM improvements such as ZGC thread handling and elastic metaspace, new tools, incubator APIs, and broader community contributions—while maintaining backward compatibility and a predictable six‑month release cadence.
In 2020 Tencent's KonaJDK team enhanced Java memory analysis by parallelizing jmap heap scans across multiple garbage collectors, achieving 2‑8× speedups, adding gzipped heap dump support, and contributing dozens of patches and commits to the OpenJDK community.
The article introduces Huawei's open-source Bisheng JDK 8, outlines its performance‑enhanced features such as JFR and fast serialization, and provides a step‑by‑step installation guide for the Linux/AArch64 platform, including download links, extraction commands, and optional configuration options.
The article outlines eight official JDK 16 proposals—including ZGC thread‑stack removal, flexible metaspace, C++14 support, incubator vector API, Windows/AArch64 ports, Alpine Linux builds, and the migration of the OpenJDK source from Mercurial to GitHub—while noting JDK 16’s short‑term support and the prevalence of JDK 8 among developers.
In September, developers saw a notable C++ ranking rise, Java’s decline, Huawei’s HarmonyOS 2.0 open‑sourcing, Android 11’s release, WeChat’s expanded search, OpenJDK’s move to GitHub, and Angular 10.1 and 11.next.1 updates, highlighting major shifts across programming languages and platforms.
Alibaba Dragonwell is a free, production‑ready OpenJDK distribution offering long‑term support, performance boosts, and security fixes, fully compatible with Java SE and widely used across Alibaba’s e‑commerce, finance, and logistics services on Linux, Windows, and macOS.
This article surveys the latest Java SE open‑source landscape, compares JDK options, highlights Alibaba Dragonwell’s innovations, and explores emerging OpenJDK trends such as JFR, ZGC, Graal, Loom, as well as Java’s evolution for cloud‑native, AI, and polyglot programming.
This article presents a comprehensive performance comparison of OpenJDK 14 with OpenJDK 8 and other major releases, using Phoronix benchmarks across workloads such as SPECjbb, Java 2D, SciMark, DaCapo, Jython, Daytrader, Renaissance, and HBase, and draws conclusions about overall speed trends.
The talk reviews OpenJDK’s evolution, contrasts Oracle JDK, introduces Tencent’s Kona JDK as a free, long‑term, production‑hardened fork optimized for massive micro‑service and big‑data workloads, and discusses emerging Java‑on‑Java, value‑type, Project Panama/Loom, and SIMD Vector API trends shaping JVM performance.
Microsoft has officially signed the Oracle Contributor Agreement and announced its deeper involvement in the OpenJDK community, highlighting a historic shift in its relationship with Java and outlining future contributions and collaborations.
Recent tech headlines reveal a programmer’s server lockup leading to a startup’s collapse, Microsoft’s entry into the OpenJDK project, Spring Framework 5.1.11 and RxJava 2.2.14 releases, PyCharm 2019.3 EAP adding R support, and Samsung’s decision to dissolve its in‑house CPU team in favor of ARM.
Microsoft has officially signed the Oracle Contributor Agreement and announced its integration into the OpenJDK community, highlighting a renewed commitment to Java development, collaboration with key partners, and future contributions that could reshape the Java ecosystem.
In this interview, Oracle Java Platform Group Beijing Director Yu Haibo discusses Java’s historical origins, its enduring success factors, community‑driven evolution, release cadence, competition with languages like C#, Go and Rust, the role of the JCP, and his upcoming GIAC talk on Java’s future.
This article examines the pause behavior of various OpenJDK garbage collectors by running a memory‑allocation benchmark, presenting detailed GC logs for G1, Parallel, CMS, Shenandoah, and Epsilon, and drawing conclusions on how to choose the appropriate collector for a given workload.
Alibaba Dragonwell is a free, long‑term supported OpenJDK distribution that incorporates Alibaba's internal AJDK enhancements, adds performance‑boosting features like JWarmUp and Java Flight Recorder, and provides serviceability tools such as large‑array warnings and mini heap dumps for production Java workloads.
Alibaba Dragonwell is a free, long‑term‑support OpenJDK distribution announced at the Beijing Alibaba Cloud Summit, offering performance, security, and compatibility enhancements for large‑scale Java deployments while integrating Alibaba’s own innovations such as JWarmup and Java Flight Recorder.
This article explains Oracle's recent statements on Java support and subscription licensing, compares Oracle JDK with OpenJDK and other vendors, and guides developers on choosing free or paid options for Java SE 8 and 11 LTS releases.
This article explains why migrating a Spring Boot app from Java 8 to Java 11 is necessary, compares OpenJDK and commercial licenses, outlines Spring's Java‑11 support, and provides detailed migration steps, dependency updates, and Maven/Gradle configuration changes.
Amazon Corretto is a free, long‑term‑support OpenJDK distribution that runs on Linux, Windows, macOS and Docker, offering production‑ready performance and security updates, with step‑by‑step installation guides for macOS and Docker environments.
This article explains Oracle's Java 11 licensing changes, the split between commercial and OpenJDK builds, support and update policies, and how organizations can choose the right JDK from Oracle or alternative vendors to ensure proper maintenance and compliance.
This article provides a comprehensive overview of Java, explaining its evolution from a simple programming language to a broad technology ecosystem that includes Java SE, EE, ME, the JDK and JRE, OpenJDK, the Java Community Process, and the role of the JVM in achieving write‑once‑run‑anywhere.
On May 17, 2018, Alibaba became the sole Chinese representative on the Java Community Process (JCP) Executive Committee, giving China a voice in shaping global Java standards, highlighting its extensive Java deployment across e‑commerce, finance, and logistics, and its open‑source contributions like AlibabaJDK, Dubbo, and RocketMQ.
The article explains that JDK 10 was released on March 20 2018, describes how to obtain it via the early‑access program, and details its key innovations such as local‑variable type inference, a clean garbage‑collector interface, G1 parallelization, repository consolidation, and several proposed enhancements.
This guide explains how to clone the OpenJDK 8 and 8u repositories using Mercurial, set up the environment, and compile the source code with the standard configure and make process, noting that parallel builds are not supported.
Throughout 2014 Java cemented its status as a versatile, widely adopted language, highlighted by RedMonk’s popularity ranking, the Java 8 release with lambdas, Nashorn, and new Date/Time API, ARM64 support, a revitalized JCP, expanding OpenJDK membership, and growing community initiatives.
