When multiple exceptions occur, the first matching __ block is executed.

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BlackTom AI · Accepted Answer

The statement is describing how exception handling works in languages that use a structured try-block with multiple handlers.
In such languages, a try block is followed by several catch/except blocks that specify different exception types. When an exception is thrown, the runtime checks each handler in the order they appear and executes the first handler whose exception type matches the thrown exception. This means the matching block is chosen sequentially, and earlier, more specific handlers can prevent later ones from running.
If none of the handlers match the exception type, the runtime continues searching (or terminates if no handler is found), which may result in the program propagating the exception or triggering a global handler.
A key nuance is that the order matters: placing a very general handler before a specific one can cause the specific exception to be caught by the general block, preventing the specific handling from occurring. This is why languages with multiple catch blocks often recommend ordering from most specific to most general, to ensure the intended match is taken.
Since the prompt uses a placeholder (__ block), the intended word is the type of handler block that would be chosen when a matching exception is encountered, commonly referred to as the catch block in languages like Java or C#, or the except block in Python. The core idea remains the same across these languages: the first handler that matches the thrown exception runs.

Advanced Programming (202504-LLecture)

When multiple exceptions occur, the first matching __ block is executed.

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