Error Handling

In many object-oriented programming languages, run-time errors are handled using exceptions. You saw last year how this idea works in Python. Here, we take a deeper dive into the concept, using Kotlin.

You’ll notice many similarities between Kotlin’s approach and Python’s approach, but Kotlin provides some additional features that make it easy to create and intercept exceptions.

Another idea that you encountered last year, in both Python and C, is the idea of assertions. Assertions are a feature of unit tests, but they can also be used directly in production code (e.g., to help with debugging, or as a defensive programming technique).

After completing this section you will have a solid understanding of how exceptions work in Kotlin. You will not only be able to create them within your own code, but also intercept those that occur in other code that you are using. You will also be able to write Kotlin code containing assertions.