Re: Java momentum slowing ?

[lrk@pobox.com (Lance Kibblewhite)]

David Botton wrote:

>You have to first wrap the call in a C (or Ada for that matter) function
>that can be called through the JNI interface. I decided just to drop the
>issue when bob@nospam came back with JNI since JNI is in native code and it
>doesn't answer my question! Meaning there is now way to directly all
>anything outside the VM with out first wrapping it in some native code JNI
>module.

Exactly correct. Thick bindings are needed, and these cannot be
written in Java.

>David Botton
>
>Lance Kibblewhite wrote:
>
>> bob@nospam wrote:
>>
>> >But to answer your question, yes of course. you use JNI (Java native
>> >interface) to call something not written in Java. It is trivial to do
>> >really. most people do that to call C or C++ code from Java. of course
>> >your application become non-portable as much as it were if all the code
>> >was written in only Java.
>>
>> Perhaps you could clarify this for me with an example.
>>
>> Lets start with something simple. Say I have a routine, in a shared
>> library, written in some other language, that takes a single
>> parameter, say a 32-bit integer passed by reference, as opposed to by
>> value.
>>
>> How exactly does JNI enable me to call that routine.