7.1 In the previously designed Car and GreenCar classes, there were situations where the code checks for logical errors. For example, Gas level must be positive, Vin Number must be alphanumeric only, or Miles driven must be positive.
Add code to check for these logical errors, so that when an error occurs, the class code would issue an errormessage via Messagebox.
Now to contrast that with EH and replace every Messagebox showing an error from Car or GreenCar with a Throw New Exception statement. Generate an error message in the Throw statement that describes the error.
Step 2 above, will require that the client code hendle these exceptions using Try-Catch statement. Add Try-Catch statement where the code is expected to cause exception in the client code.
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