a. Create an abstract class named Account for a bank. Include an integer field for the account number and a double field for the account balance. Also include a constructor that requires an account number and that sets the balance to 0.0. Include a set method for the balance. Also include two abstract get methods—one for each field. Create two child classes of Account: Checking and Savings. Within. the Checking class, the get method displays the String "Checking Account Information", the account number, and the balance. Within the Savings class, add a field to hold the interest rate, and require the Savings constructor to accept an argument for the value of the interest rate. The Savings get method displays the String "Savings Account Information", the account number, the balance, and the interest rate. Write an application that demonstrates you can instantiate and display both Checking and Savings objects. Save the files as Account.java, Checking.java, Savings.java, and DemoAccounts.java.
b. Write an application named AccountArray in which you enter data for a mix of 10 Checking and Savings accounts. Use a for loop to display the data. Save the file as AccountArray.java.
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