Reflection: How to invoke method without parameter properly?

Question

I am trying to invoke a method by Java reflection, which don't have any parameter as:

Method getSelectedCriteriaMethod = multipleSorting.getClass().getDeclaredMethod("getSelectedCriteria", null);
EstimateSortField selectedCriteria = (EstimateSortField)getSelectedCriteriaMethod.invoke(multipleSorting, null);

This is working, but I am getting compiler warning:

warning: non-varargs call of varargs method with inexact argument type for last parameter;
cast to java.lang.Class<?> for a varargs call
non-varargs call of varargs method with inexact argument type for last parameter;
cast to java.lang.Object for a varargs call

What is the right way to invoke a method which don't have any parameter?

Answer 1

你可以简单地说

selectedCriteria.invoke(multipleSorting);

Answer 2

getDeclaredMethod("getSelectedCriteria");
invoke(multipleSorting);