Exceptions

Throw

// throws or raises and exception
throw IntegerDivisionByZeroException();

// You can also throw arbitrary objects
throw "Product out of stock!";

Catch

try {
    int c = 3/0;
    print(c);
} on IntegerDivisionByZeroException {
    // A specific exception
    print('Can not divide integer by 0.')
} on Exception catch (e) {
    // Anything else that is an exception
    print('Unknown exception: $e');
} catch (e) {
    // No specified type, handles all
    print('Something really unknown: $e');
}

Finally

// To ensure that some code runs whether or not an exception is thrown
try {
  cookFood();
} catch (e) {
  print('Error: $e'); // Handle the exception first.
} finally {
  cleanKitchen(); // Then clean up.
}

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