How to get the initialisation value for a Java Class reference

Question

I have a Class reference for an arbitrary type. How to get that type\'s initialisation value? Is there some library method for this or do I have to rol

Answer 1

To do it without 3rd party libraries, you may create an array of length one and read out its first element (both operations via java.lang.reflect.Array):

Object o = Array.get(Array.newInstance(klass, 1), 0);

Starting with Java 9, you could also use

Object o = MethodHandles.zero(klass).invoke();