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Sohu Tech Products
Sohu Tech Products
Apr 1, 2026 · Mobile Development

Running Python on Mobile Devices: Edge Computing with NumCpp & JNI

This article explains the concept of edge computing, why models are deployed to devices, the advantages of using Python scripts on Android/iOS, and provides a step‑by‑step guide to implementing a Python interpreter, NumCpp integration, feature management, dynamic deployment, and business impact through real‑time strategy updates.

JNIMobiledynamic deployment
0 likes · 15 min read
Running Python on Mobile Devices: Edge Computing with NumCpp & JNI
Alibaba Cloud Infrastructure
Alibaba Cloud Infrastructure
Nov 25, 2025 · Operations

How to Uncover Hidden Java Memory Leaks in Kubernetes Pods

This article explains why Java applications in cloud containers often encounter OOMKilled pods, details the hidden memory consumption from JNI, libc, and Transparent Huge Pages, and demonstrates step‑by‑step how to use Alibaba Cloud OS Console's memory panorama analysis to identify and mitigate the root causes.

JNIKubernetesPod OOM
0 likes · 11 min read
How to Uncover Hidden Java Memory Leaks in Kubernetes Pods
Programmer DD
Programmer DD
Oct 12, 2025 · Backend Development

Boost Java Performance: Integrate CUDA GPU Acceleration via JNI

This guide explains why Java struggles with high‑performance or data‑intensive workloads, introduces GPU acceleration with CUDA, compares integration options such as JCuda, JNI, and JNA, walks through a practical encryption use case with performance benchmarks, and provides production‑grade best practices for memory, threading, testing, security, and deployment.

CUDAGPUHigh‑performance computing
0 likes · 23 min read
Boost Java Performance: Integrate CUDA GPU Acceleration via JNI
JavaEdge
JavaEdge
Jun 28, 2025 · Backend Development

How Java Developers Can Harness CUDA on NVIDIA A100 GPUs

This guide explains why Java architects should understand CUDA, describes the GPU programming model, compares CPU and GPU designs, and details three practical ways—JNI, JCuda, and TornadoVM—to integrate CUDA acceleration into Java applications, with tips for using A100 GPUs effectively.

A100CUDAGPU
0 likes · 15 min read
How Java Developers Can Harness CUDA on NVIDIA A100 GPUs
FunTester
FunTester
Jan 10, 2025 · Backend Development

Seamlessly Call Go Functions from Java Using JNI: A Step‑by‑Step Guide

Learn how to integrate Go and Java by compiling Go code into a shared library, exposing functions via cgo and JNI, and invoking them from Java with detailed setup, code examples, handling of primitive and complex data types, and full build‑and‑run instructions.

GoInteroperabilityJNI
0 likes · 12 min read
Seamlessly Call Go Functions from Java Using JNI: A Step‑by‑Step Guide
Rare Earth Juejin Tech Community
Rare Earth Juejin Tech Community
Jan 2, 2025 · Mobile Development

Introduction to JNI and NDK Development for Android

This article provides a comprehensive introduction to Android NDK development, covering JNI fundamentals, data type mappings, method registration (static and dynamic), JNIEnv usage, CMake build configuration, and multiple practical code examples in Kotlin, C++, and C.

AndroidCCMake
0 likes · 12 min read
Introduction to JNI and NDK Development for Android
Code Ape Tech Column
Code Ape Tech Column
Dec 4, 2024 · Backend Development

Deep Dive into Netty’s Asynchronous Model, Epoll, IO Multiplexing, and JNI with Hands‑On C Code

This article explains Netty’s asynchronous architecture, compares classic multithread, Reactor, select, poll and epoll models, clarifies level‑triggered versus edge‑triggered event handling, and provides step‑by‑step JNI and hand‑written epoll server examples in C to illustrate high‑performance backend development.

CIO MultiplexingJNI
0 likes · 33 min read
Deep Dive into Netty’s Asynchronous Model, Epoll, IO Multiplexing, and JNI with Hands‑On C Code
Top Architect
Top Architect
Dec 1, 2024 · Backend Development

Diagnosing Slow Asynchronous Log Printing in Java: From Mapping Overhead to Disruptor and JNI Analysis

This article investigates why a large number of quality‑check mappings cause severe latency in a Java service, traces the slowdown to excessive asynchronous log printing, explains the Disruptor‑based async logger internals, evaluates stack‑trace location handling and JNI overhead, and proposes practical configuration and code‑level fixes.

DisruptorJNIJava
0 likes · 20 min read
Diagnosing Slow Asynchronous Log Printing in Java: From Mapping Overhead to Disruptor and JNI Analysis
Architect
Architect
Nov 22, 2024 · Backend Development

Why Is Async Log4j2 Logging So Slow? A Deep Dive into Disruptor and JNI Overheads

The article investigates a severe performance bottleneck in a Java service caused by massive async Log4j2 logging, analyzes the Disruptor‑based async logger, explores JNI stack‑trace overhead, reproduces the issue with benchmarks, and provides practical recommendations to eliminate the slowdown.

DisruptorJNIJava
0 likes · 18 min read
Why Is Async Log4j2 Logging So Slow? A Deep Dive into Disruptor and JNI Overheads
21CTO
21CTO
Oct 3, 2024 · Fundamentals

JDK 24 Preview: JNI Warnings, G1 Barrier Extensions, and Class File API Explained

JDK 24, slated for a March 2025 release as a non‑LTS version, introduces JNI usage warnings, a G1 garbage‑collector post‑barrier extension, a finalized Class File API, and several potential enhancements, while offering six months of premium support following the recent JDK 23 launch.

Class File APIG1 Garbage CollectorJDK 24
0 likes · 6 min read
JDK 24 Preview: JNI Warnings, G1 Barrier Extensions, and Class File API Explained
Java Architecture Stack
Java Architecture Stack
Sep 27, 2024 · Industry Insights

How to Connect Java to Industrial Devices: Modbus, JNI, and Serial Port Solutions

This guide explains how Java can communicate with industrial hardware by using the Modbus protocol with jLibModbus, accessing low‑level registers via JNI, and employing serial‑port libraries such as JSerialComm or RXTX, providing step‑by‑step setup, code examples, dependency configuration, and practical considerations for reliable device integration.

Hardware integrationIndustrial IoTJNI
0 likes · 19 min read
How to Connect Java to Industrial Devices: Modbus, JNI, and Serial Port Solutions
Rare Earth Juejin Tech Community
Rare Earth Juejin Tech Community
Jul 10, 2024 · Mobile Development

Integrating Rust into Android: A Step-by-Step Guide

This article explains how to set up Rust for Android development, covering installation, creating a demo project, using JNI to call Rust functions, building the shared library, integrating it into an Android app, and designing a scalable architecture with event dispatch and Protobuf.

FFIJNIRust
0 likes · 12 min read
Integrating Rust into Android: A Step-by-Step Guide
Code Ape Tech Column
Code Ape Tech Column
Feb 17, 2024 · Backend Development

Understanding Netty’s Asynchronous Model, Epoll, and IO Multiplexing: Theory, JNI Integration, and a Hand‑Written Epoll Server

This article explains Netty’s reactor‑based asynchronous architecture, compares classic multithread, select, poll and epoll I/O multiplexing models, demonstrates Java‑C interaction via JNI, and provides a complete hand‑written epoll server implementation with detailed code and performance insights.

CIO MultiplexingJNI
0 likes · 36 min read
Understanding Netty’s Asynchronous Model, Epoll, and IO Multiplexing: Theory, JNI Integration, and a Hand‑Written Epoll Server
Meituan Technology Team
Meituan Technology Team
Aug 31, 2023 · Backend Development

Performance Optimization of Java Compression in MJDK Using ISA‑L Based mzlib

The article explains how MJDK, Meituan's OpenJDK‑based distribution, integrates the Intel ISA‑L‑optimized mzlib library into java.util.zip, preserving API and format compatibility while delivering a five‑to‑ten‑fold increase in compression and decompression throughput, backed by benchmark results on the Silesia corpus.

ISA‑LJNIJava
0 likes · 13 min read
Performance Optimization of Java Compression in MJDK Using ISA‑L Based mzlib
Baidu Geek Talk
Baidu Geek Talk
Jun 28, 2023 · Information Security

DEX‑VMP Based Android Code Protection: Design, Implementation, and Analysis

The paper presents a DEX‑VMP scheme that encrypts Dalvik bytecode and executes it via a custom virtual machine and JNI bridge, merging the strengths of dynamic loading, hooking, instruction extraction, and java‑to‑C++ conversion while highlighting compatibility issues, performance overhead, and the need for selective protection of high‑value Android methods.

AndroidDEXJNI
0 likes · 17 min read
DEX‑VMP Based Android Code Protection: Design, Implementation, and Analysis
OPPO Amber Lab
OPPO Amber Lab
Jun 28, 2023 · Mobile Development

Unveiling Android NFC: From App to Kernel – A Deep Source Code Walkthrough

This article dissects Android's NFC implementation, detailing the layered architecture from the high‑level app down to the kernel driver, explaining each source‑code component, the initialization sequence, and how events travel through JNI, HAL, and the transport‑mapping layer to enable NFC functionality.

AndroidJNINFC
0 likes · 17 min read
Unveiling Android NFC: From App to Kernel – A Deep Source Code Walkthrough
NetEase Cloud Music Tech Team
NetEase Cloud Music Tech Team
May 22, 2023 · Mobile Development

Techniques for Reducing Android NDK .so Size: Code, Build, and Dependency Optimization

The article shows how to shrink Android NDK .so binaries by over 30% through code de‑duplication, disabling exceptions/RTTI/iostream, using fine‑grained sections with LTO and dead‑code elimination, limiting exported symbols via version scripts, employing JNI dynamic registration, and consolidating C++ runtime dependencies into a shared library.

Android NDKBuild configurationC
0 likes · 13 min read
Techniques for Reducing Android NDK .so Size: Code, Build, and Dependency Optimization
Zhuanzhuan Tech
Zhuanzhuan Tech
Mar 15, 2023 · Backend Development

EJC Architecture: Integrating Electron, Java, and C/C++ for Scalable Desktop Quality Inspection Applications

This article presents the EJC (Electron‑Java‑C/C++) architecture adopted by ZhiZhuan’s quality‑inspection platform, detailing its layered design, communication modules, JNI/JNA integration, performance comparisons, and real‑world implementation for cross‑platform desktop tools, illustrating how the approach enhances extensibility, maintainability, and scalability.

CDesktop ApplicationElectron
0 likes · 17 min read
EJC Architecture: Integrating Electron, Java, and C/C++ for Scalable Desktop Quality Inspection Applications
Sohu Tech Products
Sohu Tech Products
Mar 8, 2023 · Mobile Development

Deep Dive into Android Touch Event Processing: From Kernel to View

This article explains how Android transforms raw touch signals from the hardware into MotionEvent objects, routes them through the InputManagerService, InputReader, and InputDispatcher, and finally delivers them to the appropriate View or ViewGroup, detailing the roles of sockets, InputChannel, and the event‑dispatch chain.

AndroidInputDispatcherInputSystem
0 likes · 48 min read
Deep Dive into Android Touch Event Processing: From Kernel to View
Alibaba Cloud Native
Alibaba Cloud Native
Dec 20, 2022 · Backend Development

Why Does Instrumentation.appendToSystemClassLoaderSearch Fail in Containers? A Deep Dive into Java Agent, JNI, and Thread‑Safety

This article investigates intermittent Java Agent errors caused by Instrumentation.appendToSystemClassLoaderSearch in container environments, tracing the issue through JNI calls, glibc stat failures, locale‑dependent iconv conversion, and ultimately fixing it with pthread thread‑local storage and proxy wrappers.

ContainerIConvJNI
0 likes · 11 min read
Why Does Instrumentation.appendToSystemClassLoaderSearch Fail in Containers? A Deep Dive into Java Agent, JNI, and Thread‑Safety
Top Architect
Top Architect
Dec 13, 2022 · Backend Development

Using LuaJ to Call Java Methods from Lua and Vice Versa

This article explains the main features of LuaJ, provides usage examples for calling Java static methods from Lua (including handling signatures and return values), demonstrates how to pass Lua functions to Java, and shows how to embed and execute Lua scripts within Java code.

JNIJavabridge
0 likes · 12 min read
Using LuaJ to Call Java Methods from Lua and Vice Versa
Programmer DD
Programmer DD
Nov 28, 2022 · Backend Development

How to Bridge Lua and Java with luaj: Call Java Methods from Lua

This article explains how to use luaj, a Lua‑Java bridge, to call Java static methods from Lua, pass Lua functions to Java, handle method signatures, check call results, and manage error codes, providing practical code examples for seamless integration.

JNIJavaLua
0 likes · 9 min read
How to Bridge Lua and Java with luaj: Call Java Methods from Lua
Top Architect
Top Architect
Oct 25, 2022 · Backend Development

Understanding Netty's Asynchronous Model, Linux I/O Multiplexing (select, poll, epoll) and JNI Integration

This article explains Netty's high‑performance asynchronous architecture, compares classic multithread, Reactor, select, poll and epoll I/O multiplexing models, describes level‑triggered versus edge‑triggered event handling, and provides a step‑by‑step JNI example and a hand‑written epoll server implementation in C.

BackendIO MultiplexingJNI
0 likes · 34 min read
Understanding Netty's Asynchronous Model, Linux I/O Multiplexing (select, poll, epoll) and JNI Integration
Architect's Guide
Architect's Guide
Oct 21, 2022 · Backend Development

Understanding Netty's Asynchronous Model and Linux epoll: From the Stone Sword Analogy to High‑Performance IO

This article explains how Netty implements a powerful asynchronous, event‑driven architecture using the Reactor pattern, compares classic multithread, select, poll and epoll I/O multiplexing models, demonstrates JNI integration with Java, and provides a complete, annotated epoll server example with level‑triggered and edge‑triggered handling for high‑concurrency backend development.

AsynchronousBackendIO Multiplexing
0 likes · 32 min read
Understanding Netty's Asynchronous Model and Linux epoll: From the Stone Sword Analogy to High‑Performance IO
Code Ape Tech Column
Code Ape Tech Column
Sep 9, 2022 · Backend Development

Understanding Netty’s Asynchronous Model, Epoll, and IO Multiplexing – From Theory to a Hand‑Written Server

This article explains Netty’s reactor‑based asynchronous architecture, compares classic multithread, select, poll and epoll models, demonstrates JNI integration with C code, and provides a complete hand‑written epoll server example to illustrate high‑performance backend networking in Java.

CIO MultiplexingJNI
0 likes · 34 min read
Understanding Netty’s Asynchronous Model, Epoll, and IO Multiplexing – From Theory to a Hand‑Written Server
IT Architects Alliance
IT Architects Alliance
Aug 30, 2022 · Backend Development

Understanding Netty’s Asynchronous Model, Linux epoll, and JNI: Theory, Code Walkthrough, and Hand‑written Server Implementation

This article explains Netty’s high‑performance asynchronous architecture, the evolution of I/O multiplexing models from select to poll and epoll, demonstrates Java‑C integration via JNI with detailed code examples, and provides a complete hand‑written epoll server in C for achieving million‑connection concurrency.

CIO MultiplexingJNI
0 likes · 32 min read
Understanding Netty’s Asynchronous Model, Linux epoll, and JNI: Theory, Code Walkthrough, and Hand‑written Server Implementation
vivo Internet Technology
vivo Internet Technology
Aug 17, 2022 · Backend Development

Can JNI Supercharge Your Java Services? A Hands‑On Performance Journey

Facing heavy GC overhead and slow model inference in a Java compute service, the authors explore using Java Native Interface to offload file loading and regression calculations to C++, detailing environment setup, Maven integration, native method implementation, common pitfalls, performance testing with JMH, and achieving up to 80% latency reduction.

CJNIJava
0 likes · 20 min read
Can JNI Supercharge Your Java Services? A Hands‑On Performance Journey
21CTO
21CTO
Feb 5, 2022 · Fundamentals

Can Java Threads Skip GC Pauses? Exploring G1 Region Fixation Proposal

This article explains the JEP 423 proposal to fix regions in the G1 garbage collector, allowing Java threads to avoid pauses during JNI critical sections and reducing GC latency, while discussing implementation details, potential heap exhaustion risks, and upcoming JDK release timelines.

Garbage CollectionJEP 423JNI
0 likes · 5 min read
Can Java Threads Skip GC Pauses? Exploring G1 Region Fixation Proposal
ByteDance Dali Intelligent Technology Team
ByteDance Dali Intelligent Technology Team
Sep 1, 2021 · Mobile Development

Exploring Rust-Based UI Rendering on Android: Architecture, Hardware Acceleration, and JNI Integration

This article explores the feasibility of using Rust for UI rendering on Android by analyzing the rust-windowing ecosystem, detailing both software and hardware rendering approaches, explaining the integration of winit and glutin for cross-platform window and OpenGL context management, and demonstrating JNI-based communication with Android Surface components.

Android DevelopmentJNIOpenGL ES
0 likes · 15 min read
Exploring Rust-Based UI Rendering on Android: Architecture, Hardware Acceleration, and JNI Integration
Tencent Music Tech Team
Tencent Music Tech Team
Jan 12, 2019 · Mobile Development

Technical Solution and Performance Optimization for Animated Lyrics Using ASS Subtitle Rendering on Mobile

The project replaces karaoke effects with ASS‑based lyrics on Android, using a backend to generate ASS files and a JNI renderer that rasterizes and composites bitmap fragments; optimizations like transparent‑fragment filtering, opacity early‑out, NEON SIMD, copy elimination, and double‑buffered decoding cut frame time from 52 ms to under 3 ms, raise frame rate from 7 fps to 15 fps, and shrink memory usage from 180 MB to under 10 MB.

ASS subtitleJNINEON Optimization
0 likes · 16 min read
Technical Solution and Performance Optimization for Animated Lyrics Using ASS Subtitle Rendering on Mobile
360 Tech Engineering
360 Tech Engineering
Apr 19, 2018 · Mobile Development

Bypassing Android P Hidden API Restrictions: Three Practical Methods

This article analyzes the restriction mechanism of hidden APIs in Android P Preview 1 and presents three verified techniques—direct module provisioning, class‑loader manipulation, and access‑flag tampering—that allow developers to invoke system hidden APIs without triggering runtime warnings.

AndroidAndroid PBypass
0 likes · 8 min read
Bypassing Android P Hidden API Restrictions: Three Practical Methods
Qizhuo Club
Qizhuo Club
Apr 12, 2018 · Mobile Development

How to Bypass Android P Hidden API Restrictions: Three Proven Methods

This article analyzes Android P's hidden API restrictions, explains the underlying distinction mechanisms, and presents three practical techniques—direct calls with a provided module, classloader manipulation via reflection, and access flag tampering—to reliably invoke hidden system APIs on Android devices.

AndroidBypassHidden API
0 likes · 8 min read
How to Bypass Android P Hidden API Restrictions: Three Proven Methods
UCloud Tech
UCloud Tech
Mar 14, 2018 · Backend Development

How to Call C/C++ Libraries from Java Using JNA: A Practical Guide

This article explains how to access native C/C++ functions and complex structures from Java using JNI, JNA, and SWIG, compares their trade‑offs, provides type‑mapping tables, detailed code examples for struct definitions, passing, and callbacks, and offers practical tips for reliable cross‑language integration.

CJNAJNI
0 likes · 9 min read
How to Call C/C++ Libraries from Java Using JNA: A Practical Guide
Tencent Music Tech Team
Tencent Music Tech Team
Feb 9, 2018 · Mobile Development

Understanding String Encoding in Android JNI: From Native Crash to Source Code Analysis

This article investigates an Android JNI native crash caused by misusing NewString(), examines why a custom UTF‑8‑to‑UTF‑16 conversion was used instead of NewStringUTF(), compares Dalvik and ART string encodings, reveals a Dalvik UTF‑8 conversion bug fixed in ART, and advises developers on encoding nuances across Android versions.

ARTAndroidDalvik
0 likes · 26 min read
Understanding String Encoding in Android JNI: From Native Crash to Source Code Analysis
Tencent Music Tech Team
Tencent Music Tech Team
Dec 22, 2017 · Mobile Development

Organizing Native Layer Code and Implementing Dynamic Loading/Unloading of .so Libraries in Android

The article outlines a systematic method for structuring native‑layer code and using dlopen, dlsym, and dlclose to dynamically load and unload .so libraries on Android, enabling selective loading, reduced memory usage, hot‑fix updates, and solutions to STL version, permission, and C++ name‑mangling challenges.

AndroidCDynamic Loading
0 likes · 14 min read
Organizing Native Layer Code and Implementing Dynamic Loading/Unloading of .so Libraries in Android
JD Retail Technology
JD Retail Technology
Dec 14, 2017 · Information Security

Android Signature Verification and JNI Registration: Security Challenges and Mitigation Strategies

This article explains the background of Android app signing, outlines the core security objectives of confidentiality, integrity and availability, compares static and dynamic JNI registration methods, demonstrates native signature verification and certificate integrity checks, and summarizes common cracking techniques together with practical hardening solutions.

AndroidJNISecurity
0 likes · 16 min read
Android Signature Verification and JNI Registration: Security Challenges and Mitigation Strategies
Hujiang Technology
Hujiang Technology
Jul 13, 2017 · Mobile Development

Resolving Threading and FindClass Issues in Android NDK

The article explains how upgrading the Android NDK introduces threading pitfalls such as ANR and FindClass failures, and provides step‑by‑step solutions using main‑thread class lookup, global references, and thread attachment to safely execute JNI calls in background threads.

AndroidFindClassJNI
0 likes · 4 min read
Resolving Threading and FindClass Issues in Android NDK
Hujiang Technology
Hujiang Technology
Mar 20, 2017 · Databases

Cross‑Platform SQLite Development with Free Pascal and CodeTyphon

This tutorial demonstrates how to build a single, reusable SQLite library in Free Pascal using CodeTyphon, covering platform‑specific APIs, export conventions for Android, iOS, PC, and detailed compilation and usage examples across Android, iOS, macOS, Linux, and Windows.

AndroidCodeTyphonFree Pascal
0 likes · 9 min read
Cross‑Platform SQLite Development with Free Pascal and CodeTyphon
Hujiang Technology
Hujiang Technology
Dec 13, 2016 · Information Security

Common Pitfalls and Solutions When Building an APK Protection Tool

This article enumerates the typical traps encountered while developing an Android APK protection solution—such as signature verification, JNI library stripping, smali injection limits, magic‑number manipulation, and post‑obfuscation safeguards—and offers practical mitigation strategies for each.

APK protectionAndroid SecurityJNI
0 likes · 11 min read
Common Pitfalls and Solutions When Building an APK Protection Tool