<dependency> <groupId>org.mockito</groupId> <artifactId>mockito-core</artifactId> <version>3.9.0</version> <scope>test</scope> </dependency> import static org.mockito.Mockito.*; import java.util.List; List<String> mockedList = mock(List.class); when(mockedList.get(0)).thenReturn("Mockito"); String result = mockedList.get(0); assertEquals("Mockito", result); verify(mockedList).get(0);