Groovy - overriding invokeMethod for a single instance

Question

I have an instance of a java object, let\'s say an instance of ArrayList called myList.

For this particular instance, I want to override the invokeMethod method to (

Answer 1

There might be a shorter route to the original method, but this should work:

def myList = [ 1, 2, 3 ]

myList.metaClass.invokeMethod { name, args -> 
   println "Called ${name} with ${args}"
   delegate.class.metaClass.getMetaMethod( name, args )?.invoke( delegate, args )
}

myList.sum()