Is there any restriction in C++ calling Java methods?

[Cal]

We develop a Java application using mule, which run ok. But when
called in C++, it tells that 0x6e032858 instruction accessing memory
with invalid address 0x00000000.

So I wonder whether there is some restrictions concerning with C++
calling Java methods. And how can I correct this error? Thank you very
much.

Allen

 

[Arne Vajhøj]

We develop a Java application using mule, which run ok. But when
called in C++, it tells that 0x6e032858 instruction accessing memory
with invalid address 0x00000000.

So I wonder whether there is some restrictions concerning with C++
calling Java methods. And how can I correct this error? Thank you very
much.

Calling Java code from C++ via JNDI is supported and should work.

But you can easily mess something up in the call.

If you can recreate a small example that can recreate it then we can
look at that.

If not then it will be hard work to track it down.

Arne

 

[Tom Anderson]

Calling Java code from C++ via JNDI is supported and should work.

Yes, you just implement your code as a JNDI service provider, then wrap
the JNDI objects in a CosNaming interface and export that through CORBA.
Import the interfaces to the C++ app via an ORB, and you're away.

Another option would be use JNI, i think you can use that for this too.

I apologise for the pun about CORBA, although i would like to point out
that it's technically accurate.

If you can recreate a small example that can recreate it then we can
look at that.
Yup.

If not then it will be hard work to track it down.

Ooh yup.

tom

 

[Arne Vajhøj]

Yes, you just implement your code as a JNDI service provider, then wrap
the JNDI objects in a CosNaming interface and export that through CORBA.
Import the interfaces to the C++ app via an ORB, and you're away.

Another option would be use JNI, i think you can use that for this too.

I apologise for the pun about CORBA, although i would like to point out
that it's technically accurate.

ROFL



That is good humor.

Arne

 

[Roedy Green]

We develop a Java application using mule, which run ok. But when
called in C++, it tells that 0x6e032858 instruction accessing memory
with invalid address 0x00000000.

So I wonder whether there is some restrictions concerning with C++
calling Java methods. And how can I correct this error? Thank you very
much.

see http://mindprod.com/jgloss/jni.html

I strongly suggest getting a book to explain it. It is fiddly code.
--
Roedy Green Canadian Mind Products
http://mindprod.com

"If everyone lived the way people do in Vancouver,
we would need three more entire planets to support us."
~ Guy Dauncey (born: 1948 age: 61)