Packages 
Package Description
org.mockito
Mockito is a mock library for java - see Mockito class for usage.
org.mockito.codegen  
org.mockito.configuration
Mockito configuration utilities.
org.mockito.creation.instance  
org.mockito.exceptions.base
Base classes for exceptions and errors, stack trace filtering/removing logic.
org.mockito.exceptions.misusing
Exceptions thrown when Mockito is misused.
org.mockito.exceptions.stacktrace
Stack trace filtering / cleaning public APIs.
org.mockito.exceptions.verification
Verification errors.
org.mockito.exceptions.verification.junit
JUnit integration to provide better support for JUnit 4 and earlier in IDEs.
org.mockito.exceptions.verification.opentest4j
Integration to provide better support for IDEs that support OpenTest4J.
org.mockito.hamcrest
Mockito Hamcrest matcher integration.
org.mockito.internal
Internal classes, not to be used by clients.
org.mockito.internal.configuration
Mockito configuration.
org.mockito.internal.configuration.injection
Mockito injection internals.
org.mockito.internal.configuration.injection.filter  
org.mockito.internal.configuration.injection.scanner  
org.mockito.internal.configuration.plugins
Mockito plugins configuration machinery.
org.mockito.internal.creation
Mock object creation.
org.mockito.internal.creation.bytebuddy
ByteBuddy related stuff.
org.mockito.internal.creation.bytebuddy.inject
Internal classes, not to be used by clients.
org.mockito.internal.creation.instance  
org.mockito.internal.creation.proxy
Mock makers based on the Proxy utility.
org.mockito.internal.creation.settings  
org.mockito.internal.creation.util
Stuff that does not have a good package yet.
org.mockito.internal.debugging
Whatever helps in debugging failed tests.
org.mockito.internal.exceptions  
org.mockito.internal.exceptions.stacktrace
Stack trace filtering / cleaning internal APIs.
org.mockito.internal.exceptions.util  
org.mockito.internal.framework  
org.mockito.internal.hamcrest  
org.mockito.internal.handler  
org.mockito.internal.invocation
Invocation machinery and related classes.
org.mockito.internal.invocation.finder  
org.mockito.internal.invocation.mockref  
org.mockito.internal.junit
JUnit integration support classes.
org.mockito.internal.junit.util  
org.mockito.internal.listeners  
org.mockito.internal.matchers
Argument matchers for verification and stubbing.
org.mockito.internal.matchers.apachecommons
Argument matchers that use Apache Commons Lang reflection-equality.
org.mockito.internal.matchers.text  
org.mockito.internal.progress
Mocking progress stateful classes.
org.mockito.internal.reporting
Deals with nicely printing verification errors.
org.mockito.internal.runners
Internal classes for runners implementations.
org.mockito.internal.runners.util
Internal utils for runner implementations.
org.mockito.internal.session  
org.mockito.internal.stubbing
Stubbing logic.
org.mockito.internal.stubbing.answers
Answers for stubbed calls.
org.mockito.internal.stubbing.defaultanswers
Implementations of default Answers.
org.mockito.internal.util
Static utils
org.mockito.internal.util.collections  
org.mockito.internal.util.concurrent  
org.mockito.internal.util.io  
org.mockito.internal.util.reflection
Reflection utilities.
org.mockito.internal.verification
Verification logic.
org.mockito.internal.verification.api
This package should be open to public once verification API is fully finished.
org.mockito.internal.verification.argumentmatching
Deals with matching arguments.
org.mockito.internal.verification.checkers
Verification checkers.
org.mockito.invocation
Public API related to mock method invocations.
org.mockito.junit
Mockito JUnit integration ; rule and runners.
org.mockito.listeners
Public classes relative to the listener APIs.
org.mockito.mock
Mock settings related classes.
org.mockito.plugins
Mockito plugins allow customization of behavior.
org.mockito.quality
Mocking quality related classes.
org.mockito.runners
JUnit runners.
org.mockito.session  
org.mockito.stubbing
Stubbing related classes.
org.mockito.verification
Verification related classes.