Mockito – NullpointerException when stubbing Method
I had this issue and my problem was that I was calling my method with any() instead of anyInt(). So I had: doAnswer(…).with(myMockObject).thisFuncTakesAnInt(any()) and I had to change it to: doAnswer(…).with(myMockObject).thisFuncTakesAnInt(anyInt()) I have no idea why that produced a NullPointerException. Maybe this will help the next poor soul.