Can I create Java-classes from C/C++ only?

Question

I have heard about JNI and have tried to use it. What I would want to do is create a Java-class from C or C++ only , ie no Java code like this:

class MyClass {
    static { System.loadLibrary("myclass_impl.dll") }
    native public int someFunction(String string);
}

For example, Python allows to create Extension Classes from C whereby you could also wrap C-functions from a DLL using ctypes.

Is there a way to do this for Java?

Answer 1

Almost certainly not. Java classes must be expressed in Java bytecode, which C and C++ are not (normally) equipped to generate. Additionally, the Java memory model is substantially different from the model in C and C++, and requires its own unusual layout constraints and the like.

Unless you want to be implementing basically an entire Java compiler in C++, I would be surprised if this could be done.