Java JNI (java native interface) tuning C under Mac

1. Write a Java class with natively declared methods

2. Use the javac command to compile the Java class written

3. Use java -jni className to generate a header file with a .h suffix

4. Implement native methods in other languages ​​(C, C++)

5. Generate a dynamic link library from the file written by the local method

 

Code: (without package path)

/**
 * native-0study
 *
 * @author xuedui.zhao
 * @create 2018-04-23
 */
public class HelloWorld {
    public native void hello();

    static{
        System.loadLibrary("hello");
    }

    public static void main(String[] args){

        new HelloWorld().hello();
    }
}