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Hayley Watson
4 years ago
Remember that Exceptions are also objects and can be handled as such; they can be constructed in and returned as values from functions, passed as arguments to other functions, and examined before being thrown. You don't have to throw it as soon as you have constructed it (the stack trace will of course reflect the moment the Exception was constructed, not the moment it was thrown).

You might, for example, want to collect additional information to include in YourException but you don't want to clutter up the YourException class or the code containing the "throw" statement by collecting the information there. Or you might want to do something (such as logging) with each Exception that is thrown from a certain region (catch it, pass it to the logging function, then rethrow it).

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