Check out JunC++ion at www.codemesh.com. JunC++ion generates C++ proxy classes for compiled Java classes. Among other features, you can implement interfaces or extend adapters in C++ and register the instances with a Java event source. A reallife example might look like:

  class MyActionListener : public ActionListenerCB
  {
  public:

    MyActionListener() : ActionListenerCB( _use_java_ctor )
    {
    }

    void  actionPerformed( const ActionEvent & _evt )
    {
       cout << _evt.toString() << endl;
    }
  };

  myButton.addActionListener( MyActionListener() );

Regards,

Alex