How to invoke a method which throws an Exception using Java Reflection?

Question

I would like to invoke a method, using Java Reflection.

The problem is that this method (which I wrote) throws an Exception (I created a myCustomException).

Answer 1

You can get the cause of it that would be the original exception.

InvocationTargetException.getCause();

From documentation:

InvocationTargetException is a checked exception that wraps an exception thrown by an invoked method or constructor.

http://docs.oracle.com/javase/6/docs/api/java/lang/reflect/InvocationTargetException.html

In your catch block, you could check if exception is from the type you expect and handle it.

One simple approach would be:

try {
   ...
} catch (InvocationTargetException ite) {
   if (ite.getCause() instanceof SomeExceptionType) {
      ...
   } else {
      ...
   }
}