ADD BUTTON: Adds the car object to the HashMap DB $($DISPLAY SUCCESS OR FAILURE

MESSAGE$)$

$$ UPDATE BUTTON: Update the car object in the HashMap DB $($DISPLAY SUCCESS OR

FAILURE MESSAGE$)$

$$ DELETE BUTTON: Delete the car object that the user selected from the HashMap DB

$($DISPLAY SUCCESS or FAILURE

$$ MESSAGE$)$

$$ CLEAR BUTTON: clear the database

$$ FIND BUTTON: The user enters the VIN number of the car to find. The program retrieves

the car object matching the VIN

$$ number from the HashMap and displays it on the screen $($DISPLAY SUCCESS OR FAILURE

MESSAGE$)$