Chapter 10, Problem 22PE

Program Plan Intro

Implementation of “AddInterestListener” program

Program plan:

• In a file “BankAccount.java”,
  • Create a package.
  • Import necessary default packages.
  • Create a class “BankAccount”,
    • Declare the variable.
    • Define the constructor to create a bank account with “0” balance.
    • Define the parameterized constructor to update the balance with the specified amount.
    • Define a method “withdraw()” to update the balance with withdrawal amount.
    • Define a method “getBalance()” to return the bank balance.
    • Define a method “addInterst()”to update the balance with interest.
• In a file “AddInterestListener.java”,
  • Create a package.
  • Import necessary packages.
  • Create a class “AddInterestListener”,
    • Declare the “BankAccount” object.
    • Initialize the necessary static variable.
    • Define the constructor to set the bank account.
    • Define the method “actionPerformed()”,
      • Compute the interest.
      • Call the method “deposit()”.
      • Print the bank balance.
• In a file “InvestmentViewer1.java”,
  • Create a package.
  • Import necessary packages.
  • Create a class “InvestmentViewer1”,
    • Declare the necessary static variables.
      • Create “JFrame” object.
      • Create object for “JButton”.
      • Add the button into the frame.
      • Create object for “BankAccount”.
      • Create object for “ActionListener” to add the interest to the account.
      • Call the method “addActionListener()” for button.
      • Set the size for frame.
      • Set the operation for frame.
      • Make the frame visible.