JNI DEMO
make.sh
javac -h . HelloJNI.java g++ -I"$JAVA_HOME/include" -I"$JAVA_HOME/include/dawin" -shared -o libhelloJNI.dylib HelloJNI.cpp javac HelloJNI.java java HelloJNI
HelloJNI.java
public class HelloJNI { private native void helloJNI(String param); static{ System.loadLibrary("helloJNI"); } public static void main(String[] args) { HelloJNI jni = new HelloJNI(); jni.helloJNI("888888"); } }
HelloJNI.h
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class HelloJNI */
#ifndef _Included_HelloJNI
#define _Included_HelloJNI
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: HelloJNI
* Method: helloJNI
* Signature: (Ljava/lang/String;)V
*/
JNIEXPORT void JNICALL Java_HelloJNI_helloJNI
(JNIEnv *, jobject, jstring);
#ifdef __cplusplus
}
#endif
#endif
HelloJNI.cpp
#include "HelloJNI.h"
#include <iostream>
using namespace std;
JNIEXPORT void JNICALL Java_HelloJNI_helloJNI
(JNIEnv *env, jobject ,jstring param)
{
// 1. 获取C风格的字符串
const char *cstr = env->GetStringUTFChars(param, 0);
cout <<endl <<"Hello，JNI "<<cstr <<endl ;
}