What is JNI?
JNI stands for Java Native Interface. JNI is a framework in Java that allows users to run the Java Code and Operate with the applications and libraries written in other languages example C, C++, etc. It acts as a bridge between the Java Platform and Native Environment (Application or Libraries).
Working on Java Native Interface
The working of JNI revolves around a single concept of Native methods. These Native Methods are the methods that are present in Java Code but are implemented in any other native language. After covering a Native method in our article we can simply implement using the few steps mentioned below:
- A header file of the native language is created.
- Implement the native method in that language header file.
- Load the Libary in the Java Code and no error will be shown in the Program.
Java Native Interface with Example
In the Programming World, it is often seen in the comparison of Java vs C/C++. Although the comparison doesn’t make any such sense, as both the languages have their Pros and Cons, but what if we can use multiple languages in a single Program?
In this article, we will learn How to use JNI(Java Native Interface) to run multiple languages in a single Program.
What is Interface?
Like a class, interfaces in Java can have methods and variables, but the methods declared in the interface are by default abstract (only method signature, nobody). Interfaces specify what a class must do and not how. It is the blueprint of the class.
Syntax :
interface <interface_name>{
// declare constant fields
// declare methods that abstract
// by default.
}