JNI, cast between jobect and jthrowable

I need raise an exception from C++ code. Raised exception must contain text and code of error. So common form:

ThrowNew(jclass clazz, const char *msg)

is not applicable. That is why I want create my own instance of java class:

public class MyException extends Exception

开发者_开发问答

that contains one more property for code. But JNI interface has only declaration for

Throw(jthrowable obj)

Is it correct to cast instance of MyException to jthrowable ?

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For the JVM jthrowable is an instance of java.lang.Throwable so if you instantiate the exception in your JNI code and cast it, it should work.