Attempt to mockito mock any class generates ExceptionInInitializerError

Question

When I run the following code:

public class ActivityTest extends ActivityInstrumentationTestCase2 {
    ....
    public void testCanCreat         


        

Answer 1

I stumbled upon the same error and could make it work by using

androidTestImplementation 'org.mockito:mockito-android:2.18.3'

in my build.gradle.

I previously made the mistake to only import 'org.mockito:mockito-core:2.18.3'.