Chapter 6, Problem 13PC

Deposit and Withdrawal Files

Program Plan:

“SavingsAccount.java” file:

• Define a class “SavingsAccount”.
  • Declare required variables.
  • Create constructor for “SavingsAccount” class with arguments of balance and interest rate.
  • Define “withdrawalFunction()” function.
    • This function is used for withdraw the amount from an account.
  • Define “depositAmount()” function.
    • This function is used for deposit the amount into an account.
  • Define “addInterest()” function.
    • In this function, compute the monthly interest rate and amount of interest earned in end.
    • Finally add the interest to balance amount.
  • Define accessor method for balance amount, interest rate and last interest rate.

“Main.java” file:

• Import required package.
• Define “Main” class.
  • Define main function.
    • Declare required variables.
    • Create the object for scanner class.
    • Read the annual interest rate from user.
    • Create the object for “SavingsAccount” class.
    • Open the input file “Deposits.txt” using “File” class.
    • Read the deposits amount from given file using “while” loop.
    • Close the deposits text file.
    • Open the input file “Withdrawals.txt” using “File” class.
    • Read the withdrawal amount from given file using “while” loop.
    • Close the withdrawal text file.
    • Compute the balance amount before adding to interest.
    • Call the function “addInterest()” to compute the monthly interest and then add the interest to balance amount.
    • Call the function “getinterestEndRate()” to compute the earned interest.
    • Finally display the interest earned amount and ending balance amount.