Unit 9 Error Handling

Strategies to avoid error

• 3 approaches

  • Organize software to minimize errors

  • Eliminate most of the errors we made through debugging and testing

  • make user the remaining errors are not serious

Types of exeptions

• Input error

  • illegal inputs

    • ie negative numbers in dates and shit
    • letters in numbers
    • floats in int aerea

• Program errors

  • Complie time errors

    • syntax errors

      • violation of just general syntax

    • link time errors

      • just like EDextitions

  • run time errors

    • program crash

      • detected by computer

    • exceptions

      • deteceted by library

    • Detecetd by user code

  • logic errors

    • errors in

How to report an error

• you can output a number

  • it can corespond to an error
  • it can just say error

• Throwing an exception

  • when an exception occurs you stop the running code and go into exception processing to handle the code

  • you can have more than 1 exception (prob on midterm)