Assume a class named BankAccount exists, containing the following methods: • a constructor that accepts a String containing the name of the account holder • a public method named getBalance that returns the account balance as a double • a public method named withdraw that accepts a double argument and deducts the amount from the account balance Write the definition of a class named CheckingAccount, that is a subclass of BankAccount. The CheckingAccount class should contain: • a boolean field named overdraft. (If overdraft is true, checks that are larger than the current account balance can be written.) • a constructor that accepts a String and a boolean. The String parameter contains the account holder's name and should be passed to the superclass (BankAccount) constructor. The boolean parameter should be used to initialize the overdraft field. • a public method named hasOverdraft, that returns a boolean. The method should return the value of the overdraft field. • a public method named clearCheck that accepts a double argument and returns a boolean. The argument is the amount of a check. The method should determine whether the amount of the check can be cashed-this will be the case if the amount is less than the balance in the account, or if the account allows overdraft. If the check can be cashed, the clearCheck method returns true, and also calls the withdraw method to update the account balance; otherwise, the clearCheck method returns false.
Assume a class named BankAccount exists, containing the following methods: • a constructor that accepts a String containing the name of the account holder • a public method named getBalance that returns the account balance as a double • a public method named withdraw that accepts a double argument and deducts the amount from the account balance Write the definition of a class named CheckingAccount, that is a subclass of BankAccount. The CheckingAccount class should contain: • a boolean field named overdraft. (If overdraft is true, checks that are larger than the current account balance can be written.) • a constructor that accepts a String and a boolean. The String parameter contains the account holder's name and should be passed to the superclass (BankAccount) constructor. The boolean parameter should be used to initialize the overdraft field. • a public method named hasOverdraft, that returns a boolean. The method should return the value of the overdraft field. • a public method named clearCheck that accepts a double argument and returns a boolean. The argument is the amount of a check. The method should determine whether the amount of the check can be cashed-this will be the case if the amount is less than the balance in the account, or if the account allows overdraft. If the check can be cashed, the clearCheck method returns true, and also calls the withdraw method to update the account balance; otherwise, the clearCheck method returns false.
Chapter11: Advanced Inheritance Concepts
Section: Chapter Questions
Problem 2PE
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