Create Simplest JNI C method : JNI « Development Class « Java






Create Simplest JNI C method

 
/*
   @version 1.10 1997-07-01
   @author Cay Horstmann
*/

#include "HelloNative.h"
#include <stdio.h>

JNIEXPORT void JNICALL Java_HelloNative_greeting(JNIEnv* env, jclass cl)
{  
   printf("Hello Native World!\n");
}


//////////



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

#ifndef _Included_HelloNative
#define _Included_HelloNative
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     HelloNative
 * Method:    greeting
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_HelloNative_greeting
  (JNIEnv *, jclass);

#ifdef __cplusplus
}
#endif
#endif




//////////


/*
   This program is a part of the companion code for Core Java 8th ed.
   (http://horstmann.com/corejava)

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 *  @version 1.11 2007-10-26
 *  @author Cay Horstmann
 */
class HelloNative
{  
   public static native void greeting();
}




///////////



/*
   This program is a part of the companion code for Core Java 8th ed.
   (http://horstmann.com/corejava)

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 *  @version 1.11 2007-10-26
 *  @author Cay Horstmann
 */
class HelloNativeTest
{  
   public static void main(String[] args)
   {  
      HelloNative.greeting();
   }

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


   
  








PrintfTest.zip( 2 k)

Related examples in the same category

1.Create JNI C method
2.format a string containing a printf format specifier with JNI
3.Using JNIEnv
4.Deal with Unicode
5.Passing parameter back and forth
6.Load a DLL
7.If the DLL is in the CLASSPATH then you don't need to specify a PATH.
8.Specify through the JVM command line the location where to find the JNI DLL to be loaded
9.JNI example 2
10.JNI example
11.Java Native Interface Demo