Given an existing class, bankaccount, containing: a constructor accepting a string corresponding to the name of the account holder. a method, getbalance, that returns a double corresponding to the account balance. a method withdraw that accepts a double, and deducts the amount from the account balance. write a class definition for a subclass, checkingaccount, that contains: a boolean instance variable, overdraft. (having overdraft for a checking account allows one to write checks larger than the current balance).

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