有的时候我们需要使用本地代码（C/C++）来克服Java中的内存管理和性能问题，Java通过JNI机制来支持内地代码的使用。 想要比较好地理解JNI是比较难的，因为它包含了两种语言和运行时机制。 2. C/C++和gcc编译器. 3. 对于windows而言，熟悉Gygwin或者MinGW. 4. 对于IDE而言，熟悉Eclipse C/C++ Development Tool (CDT) 步骤1，编写一个使用C实现函数的java类，HelloJNI.java： 上面代码的静态代码块在这个类被类加载器加载的时候调用 …

1. Introduction. 2. Design Overview. 3. JNI Types and Data Structures. 4. JNI Functions. 5. The Invocation API.

2017年6月14日 · JNI是java语言提供的Java和C/C++相互沟通的机制，Java可以通过JNI调用本地的C/C++代码，本地的C/C++的代码也可以调用java代码。JNI 是本地编程接口，Java和C/C++互相通过的接口。Java通过C/C++使用本地的代码的一个关键性原因在于C/C++代码的高效性。NDK是一系列工具的集合。

The Java Core Reflection API allows programmers to introspect Java classes at runtime. JNI provides a set of conversion functions between field and method IDs used in the JNI to field and method objects used in the Java Core Reflection API.

2024年3月26日 · 本文详细介绍了JNI（Java Native Interface）技术，它可实现Java和C/C++通信。阐述了其使用场景和优势，如操作硬件、提高复杂算法执行效率等。还介绍了通信原理、使用步骤、API详解，并通过案例实战展示了静态和动态注册方式，帮助开发者掌握JNI基本使用。

JNI reference types are organized in the following hierarchy: In C, all other JNI reference types are defined to be the same as jobject. For example: In C++, JNI introduces a set of dummy classes to enforce the subtyping relationship. For example: Method …

2024年1月8日 · To achieve this, the JDK introduces a bridge between the bytecode running in our JVM and the native code (usually written in C or C++). The tool is called Java Native Interface. In this article, we’ll see how it is to write some code with it. 2. How It Works. 2.1. Native Methods: the JVM Meets Compiled Code.

2024年10月10日 · Enter the Java Native Interface (JNI): a bridge that allows Java applications to interact with native code, typically written in C or C++. With JNI, we can tap into...

2025年3月18日 · JNI (Java Native Interface) allows Java programs to integrate and run native code written in other languages like C and C++, enhancing performance and enabling access to platform-specific features.

This description of the Java™ Native Interface (JNI) provides background information to help you diagnose problems with JNI operation. The specification for the Java Native Interface (JNI) is maintained by Oracle Corporation. It is recommended that you read the JNI specification.