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Hi,
what i do in my program:
I have a class in Java. Some Methods of this class call another global
native-method written in c++ (in a DLL). This method in c++ instances
a class. How can i do it, that at the next invocation i can use the
same instance without instantiate it new ?

Cengiz wrote:
> Hi,
> what i do in my program:
> I have a class in Java. Some Methods of this class call another global
> native-method written in c++ (in a DLL). This method in c++ instances
> a class. How can i do it, that at the next invocation i can use the
> same instance without instantiate it new ?

Have a field in the Java class which is wide enough to contain the
address of the native object's pointer, which is passed as an argument
to/accessed inside the native method.


Pete

On 25 Jul 2003 05:11:42 -0700, (Cengiz) wrote:

> Hi,
> what i do in my program:
> I have a class in Java. Some Methods of this class call another global
> native-method written in c++ (in a DLL). This method in c++ instances
> a class. How can i do it, that at the next invocation i can use the
> same instance without instantiate it new ?

Including Pete's approach (which I have used myself on
several ocassions), you can set a static field in the
C++ class and just retrieve it on entry to get the
instance pointer. Or set a DLL global variable.

In all of these instances, be sure you take thread
safety into consideration.

--Joe