Mastering unit testing in Java with JUnit can significantly improve code quality and reliability. Learn how to write effective unit tests, the benefits of unit testing, and key features of JUnit, and get best practices for implementing this crucial software development technique.

Learn how to conduct performance tests on an existing application and analyze results. This hands-on lab covers planning a performance testing strategy, configuring a performance testing tool, executing the test, analyzing results, and optimizing application performance. By the end, you'll be able to identify bottlenecks and areas for improvement to enhance your application's performance.

Discover how to transform, filter, and aggregate data in JavaScript using powerful array methods like `map`, `filter`, and `reduce`. Learn how to apply these methods to real-world applications, such as data processing and calculation of aggregates, and explore best practices for using them effectively. Mastering these methods will elevate your JavaScript skills and simplify your code.