Java Native Interface

Foreign function interface for the Java language The Java Native Interface (or Native Method Interface) is a foreign function interface designed for non-Java programming frameworks. The JNI enables Java code to call and be called by native code (i.e. any code using the JNIEnv and interfacing through the C application binary interface), native applications (programs specific to a hardware and operating system platform) and libraries written in other languages such as C, C++ and assembly. Java 22 introduces the Foreign Function and Memory API, which can be seen as the successor to Java Native Interface. Objectives JNI allows native methods to allow for applications to make calls outside of the Java platform, e.g. when the standard Java class library does not support platform-specific features or a certain program library. It is also used to modify an existing application (written in another programming language) to be accessible to Java applications. Many standard library classes depend on JNI to provide functionality to the developer and the user, such as file I/O and audio APIs. Only applications and signed applets may invoke JNI. The JNI framework allows native code to manipulate