How to call a private method from outside a java class

Question

I have a Dummy class that has a private method called sayHello. I want to call sayHello from outside Dummy. I think it sh

Answer 1

First you gotta get the class, which is pretty straight forward, then get the method by name using getDeclaredMethod then you need to set the method as accessible by setAccessible method on the Method object.

    Class clazz = Class.forName("test.Dummy");

    Method m = clazz.getDeclaredMethod("sayHello");

    m.setAccessible(true);

    m.invoke(new Dummy());