Learn essential software testing techniques in this comprehensive tutorial focusing on unit testing and integration testing using Java and JUnit5. Explore key concepts including JUnit5, integration tests, assertions, and mocking with Java Mockito. Gain hands-on experience writing tests, working with repositories, using H2 databases, and implementing @DataJPATest annotations. Master Mockito for effective mocking, utilize argument captors, and understand the process of testing student additions. Conclude with an overview of integration testing and guidance on next steps to further enhance your software testing skills.