When you have multiple exception types defined in the Catch block, which block is executed?

In the context of exception handling in programming, when multiple exception types are defined within a Catch block, the block that is executed corresponds to the exception type that most closely matches the thrown exception. This approach allows the program to handle specific error types more appropriately, applying the most relevant corrections or responses to the encountered issue.

Choosing the most specific match ensures that the actions taken are suitable for the specific situation encountered, rather than applying a more general fix that may not address the underlying issue correctly. For example, if there is an exception related to file handling and another for general exceptions, the program will first look for the specific file-related exception. If it finds it, it executes the corresponding block, allowing for tailored error handling logic.

In situations where a general exception handler appears before a specific one, the program will not reach the more specific handler, potentially leading to less effective error resolution. This hierarchy of specificity in exception handling is crucial for developing robust applications that can adequately respond to a variety of error conditions.

The other choices provide less effective strategies: executing the first exception defined or the least specific match may lead to inappropriate handling of errors, while executing the last defined exception might disregard the intended structure of exception specificity.