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Date: Mon, 24 Jun 2013 10:27:00 -0000
Message-ID: <CALUNu-pSSsU7tkaHifd-K=8TZS0sC+Lzi+y4mY3S1ZbULd3uqA@mail.gmail.com>
Subject: Re: create an object with cni
From: Bryce McKinlay <bmckinlay@gmail.com>
To: Bucher Fabio <fabio.bucher@ntb.ch>
Cc: "java@gcc.gnu.org" <java@gcc.gnu.org>
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Fabio,

You need to initialise Java by calling "JvCreateJavaVM(NULL);" before
making calls from C++ into Java code.

See the CNI documentation (=A7 11.16.2) for a complete example:
http://gcc.gnu.org/onlinedocs/gcj/Invocation.html#Invocation

Bryce

On Mon, Jun 24, 2013 at 10:37 AM, Bucher Fabio <fabio.bucher@ntb.ch> wrote:
> Hi
>
> I just have a simple programm: One Java class, one C++ class.
>
> Java:
> public class Java_with_CNI {
>
>     public Java_with_CNI(){
>     }
>
>     public void printHello(){
>         System.out.println("Hallo Du, ich wurde durch CNI aufgerufen");
>     }
> }
>
> and my C++ class:
> #include <gcj/cni.h>
> #include "Java_with_CNI.h"
>
> class Hallo{
>     int main(){
>         Java_with_CNI test =3D new Java_with_CNI::Java_with_CNI();
>         test.printHello();
>         return 0;
>     }
> };
>
>
> This is my first time i use C++, so I dont know whats wrong with my class=
. I just want to create a new Object (Java_with_CNI) and call the printHell=
o()-method.
> What is wrong with my class?
>
> Thank you for your help and best regards
> Fabio Bucher
>
>
>
>