How do I set up Mockito for testing in Java?

How do I set up Mockito for testing in Java?

To set up Mockito, first add the Mockito dependency to your project. If you're using Maven, include this in your pom.xml: <dependency><groupId>org.mockito</groupId><artifactId>mockito-core</artifactId><version>4.0.0</version></dependency>.

What about using it with JUnit?

You can use Mockito with JUnit by adding the Mockito JUnit runner. Just annotate your test class with @RunWith(MockitoJUnitRunner.class) to enable Mockito annotations.

Can you give me an example of a simple test?

Sure! Here's a simple example: @Mock private List<String> mockedList; @Test public void testAdd() { mockedList.add("one"); verify(mockedList).add("one"); }.

What are some common mistakes to avoid?

Common mistakes include not initializing mocks, using real objects instead of mocks, and forgetting to verify interactions.