Native C++ Custom Exception Not Recognized

Question

Hi,
I'm having a problem with the native part of my code when throwing a custom exception. It is never caught when the exception is thrown in a separate class, it always falls in the generic catch(...) section. I know this problem has something to do with JNI and Java since running a C++ test program doing the same thing recognizes the exception and catches it.
My Program is something like this
Java Part:
public class RunException {
  public static void main(String args[]) {
     doSomething();
}C++ Part:
class CustomException: public exception {
   public :
       exception() {};
class CatchException: public exception {
   public:
      doSomething() {
        try {
           throwException->throwException();
           throw CustomException(); //this would have been caught in catch(CustomException)
        }catch(CustomException e) {
         //never goes in here
        catch(int e) {
         //this works
        catch(...) {
        //always goes ends up here here
class ThrowException {
  public:
    throwException() {
       throw CustomException(); //this ends up in catch(...)
       //throw 1 - throwing an integer would work
} I'm not sure what's causing this but I'm guessing it has something to do with loading and linking or maybe some sort of JVM security policy/behavior? Any help would be greatly appreciated.
Edited by: z3n3r on Nov 13, 2008 7:51 PM

Answer 1

Never seen this. Some comments on your C++:
class CustomException: public exception {
public :
exception() {};That should be CustomException() {}
}catch(CustomException e) {That should be catch (CustomException &e). Never catch exceptions by value.
throwException() {That should be throwException() throw(CustomException) {}, although good old MSVC still ignores it 15 years later ...