Why IceJ is full realization with Java?

[damingyipai]

Hi:

I don't understand why IceJ is full realization with Java,
I think, Ice can build a .dll or .so, then write a JNI module or COM plug it
into java and .NET etc. it's better efficiency than pure java or C# realization.
and make maintenance more simple. right ?

[marc]

If it were not pure Java, it wouldn't be platform independent. Also, integrating C++ code into Java with something like JNI is pretty ugly, and would make the code very hard to maintain.

[damingyipai]

why can not be empty?