Commit c120d5a2 authored by Martin Deinhofer's avatar Martin Deinhofer
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Initial commit

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#include <jni.h>
#include <stdio.h>
#include "HelloJNI.h"
// Implementation of native method sayHello() of HelloJNI class
JNIEXPORT void JNICALL Java_HelloJNI_sayHello(JNIEnv *env, jobject thisObj) {
printf("Hello World!\n");
return;
}
/* 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: sayHello
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_HelloJNI_sayHello
(JNIEnv *, jobject);
#ifdef __cplusplus
}
#endif
#endif
File added
# Define a variable for classpath
CLASS_PATH = ../bin
JAVA_HOME=C:\Program Files (x86)\Java\jdk1.8.0_131
# Define a virtual path for .class in the bin directory
vpath %.class $(CLASS_PATH)
all : hello.dll
# $@ matches the target, $< matches the first dependancy
hello.dll : HelloJNI.o
gcc -Wl,--add-stdcall-alias -shared -o $@ $<
# $@ matches the target, $< matches the first dependancy
HelloJNI.o : HelloJNI.c HelloJNI.h
gcc -I"$(JAVA_HOME)\include" -I"$(JAVA_HOME)\include\win32" -c $< -o $@
# $* matches the target filename without the extension
HelloJNI.h : HelloJNI.class
javah -classpath $(CLASS_PATH) $*
clean :
rm HelloJNI.h HelloJNI.o hello.dll
\ No newline at end of file
public class HelloJNI {
static {
System.loadLibrary("hello"); // Load native library at runtime
// hello.dll (Windows) or libhello.so (Unixes)
}
// Declare a native method sayHello() that receives nothing and returns void
private native void sayHello();
// Test Driver
public static void main(String[] args) {
new HelloJNI().sayHello(); // invoke the native method
}
}
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