JNI QuickStart,Java调用C++实现

package com.merrick.test;

class MyTest1 {
    
    public native int addnumber1(int a, int b);
    
    static{
        
        //System.
        System.loadLibrary("jnidll1");//必须省略后缀.dll
    }
    
    public static void main(String args[])
    {
        
        int res = new MyTest1().addnumber1(1234,234);
        System.out.println(res);
    }
}

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_merrick_test_MyTest1 */

#ifndef _Included_com_merrick_test_MyTest1
#define _Included_com_merrick_test_MyTest1
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     com_merrick_test_MyTest1
 * Method:    addnumber1
 * Signature: (II)I
 */
JNIEXPORT jint JNICALL Java_com_merrick_test_MyTest1_addnumber1
  (JNIEnv *, jobject, jint, jint);

#ifdef __cplusplus
}
#endif
#endif

// jnidll1.cpp : 定义 DLL 应用程序的导出函数。
//

#include "stdafx.h"

#include "com_merrick_test_MyTest1.h"

JNIEXPORT jint JNICALL Java_com_merrick_test_MyTest1_addnumber1
(JNIEnv *env, jobject obj, jint a, jint b){
    return a+b;
};