java: solved callbacks

Signed-off-by: Stefan Andritoiu <stefan.andritoiu@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/hcsr04/javaupm_hcsr04.i

@@ -1,6 +1,11 @@
 %module javaupm_hcsr04
 %include "../upm.i"
 
+%feature("director") IsrCallback;
+
+%ignore generic_callback_isr;
+%include "../IsrCallback.h"
+
 %{
     #include "hcsr04.h"
 %}