I need to invoke a method dynamically. The arguments do not need to contain
values, I only need to invoke the method with defaults. I know that I can
use null for object params but what can I use for primitives?

methodName.invoke(obj,new Object[]{methodArgs});

If the method takes (Object,Object,int) I can pass (null,null,0). I want to
avoid interrogating the params and pragmatically choosing a default, is
there another safety net I can use like null for objects.