Java简单调用C语言函数

2024-10-24 约 335 字预计阅读 1 分钟

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Java简单调用C语言函数

1.安装Dev-Cpp

2.编写并编译Java代码

public class HelloCDemo {
	
	native void printHelloC();

	static{ System.loadLibrary("java2c"); }
	
	 public static void main(String args[])
	{
		HelloCDemo demo = new HelloCDemo();
		demo.printHelloC();
	}
}

javac编译java文件

javah生成.h文件

打开.h文件

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

#ifndef _Included_HelloCDemo
#define _Included_HelloCDemo
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     HelloCDemo
 * Method:    printHelloC
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_HelloCDemo_printHelloC
  (JNIEnv *, jobject);
#ifdef __cplusplus
}
#endif
#endif
**