Dart Error Handling

Error Handling :

• Exceptions :

• Your Dart code can throw and catch exceptions.

• Exceptions are errors indicating that something unexpected happened.

• If the exception isn't caught, the isolate that raised the exception is suspended, and typically the isolate and its program are terminated.

• In contrast to Java, all of Dart's exceptions are unchecked exceptions.

• Methods don't declare which exceptions they might throw, and you aren't required to catch any exceptions.

• Dart provides Exception and Error types, as well as numerous predefined subtypes.

• You can, of course, define your own exceptions.

• However, Dart programs can throw any non-null object—not just Exception and Error objects—as an exception.

Throw

throw FormatException('Expected at least 1 section');

throw 'Out of llamas!';