Learn how to write Kotlin code that handles errors and exceptions properly through a hands-on lab exercise. This code example demonstrates how to create custom exceptions, read and parse JSON files, and calculate the total salary of employees, all while catching and handling potential errors in a robust and maintainable way.

Put your knowledge of Rust into practice by designing and implementing a comprehensive application that integrates multiple concepts learned throughout the course, including ownership, borrowing, lifetimes, and concurrency. Choose from a range of project ideas or come up with your own, and ensure it's well-structured, readable, and maintainable. By completing this project, you'll be able to apply your understanding of Rust's unique features to build a real-world application.