Week 6 [Sep 16] - Tasks

Submit weekly exercises
Implement increment Level-5

1 Submit weekly exercises

As usual.

2 Implement increment Level-5

Level-5: Handle Errors

Level 5. Handle Errors

Teach Duke to deal with errors such as incorrect inputs entered by the user.

Example:

todo
    ____________________________________________________________
     ☹ OOPS!!! The description of a todo cannot be empty.
    ____________________________________________________________

blah
    ____________________________________________________________
     ☹ OOPS!!! I'm sorry, but I don't know what that means :-(
    ____________________________________________________________

When implementing this feature, you are also recommended to implement the following extension as collections classes (e.g., ArrayList) have methods to easily delete an item at a specified location:

A-Exceptions

↳ Use Exceptions to handle errors

Use exceptions to handle errors. For example, define a class DukeException to represent exceptions specific to Duke.

Minimal: handle at least the two types of errors shown in the example above.
Stretch goal: handle all possible errors in the current version. As you evolve Duke, continue to handle errors related to the new features added.