Implementation of a Graphical User Interface (GUI) Program plan: In a file “BankAccount.java”, create a class “BankAccount”, Declare the necessary variables. Define the constructor to create a bank account with “0” balance. Define the constructor to create a bank account with a specified balance. Define the method “getAccountNumber()” to return the account number. Define the method “deposit()” deposit the amount into the bank account. Define the method “withdraw()” to debit the amount from the bank account. Define the method “getBalance()” to return the bank balance. In a file “BankData.java”, import the packages and create a class “BankData”, Declare the object variable. Define the constructor to create a “BankData” object. Define the method “open()” to open the data file. Define the method “size()” to return the number of accounts in the file. Define the method “close()” to close the data file.. Define the method “read()” to read the savings account records. Define the method “find()” to search the position of a bank account with a given number. Define the method “write()” to write the savings account record to the data file. In a file “BankSimulatorFrame.java”, import necessary packages, and create a class “BankSimulatorFrame”, Declare and initialize the necessary static variables. Declare the necessary variables. Define the constructor, Create an object for “BankData”. Call the method “setLayout()”. Call the method “add()” to add the various panel. Call the method “setSize()” to set the frame size. Define the method “createLoadPanel()”, Create a panel. Create a button “Load”. Add the button into the panel. Create Listener class for the button, Define the method “actionPerformed()”, Create “JFileChooser” object. Check the condition for the file chooser, Execute try statement, Open the file Enable the buttons. Catch if exception occurs. Call the action listener method. Return the panel. Define the panel method “createFindPanel()”, Create a panel. Create a button “Find”. Disable the button. Add the button into the panel. Create a button “add”. Disable the button. Add the button into the panel. Create text field. Add the text field into the panel. Create a listener class for the buttons, Define the method “actionPerformed()”, Execute try statement, Get the account number. Search the position of the account number. Check the condition, Display the message. Disable the button. Otherwise, Read the current position. Set the text for the label. Enable the button. Catch if “IOException” exception occurs. Catch if “NumberFormatException” exception occurs. Call the listener method. Create a class for button listener, Define the method “actionPerformed()”, Get the account number. Search the position. Check the condition, Get the size. Create a new account. Call the method “write()”. Otherwise, Display the message. Read the current position. Set the text. Enable the button. Catch if “IOException” exception occurs. Catch if “NumberFormatException” exception occurs. Call the method action listener method. Returns the panel. Define the method “createBalancePanel()”, Create a panel. Create empty label. Add the label into the panel. Return the panel. Define the method “createDepositPanel()”, Create a panel. Create a button “Deposit”. Create and add the label into the panel. Create and add the text field into the panel. Add the button into the panel. Create a listener class for the buttons, Define the method “actionPerformed()”, Execute try statement, Get the amount. Call the method “deposit()”. Call the method “write()”. Set the text. Enable the button. Catch if “IOException” exception occurs. Catch if “NumberFormatException” exception occurs. Call the listener method. Returns the panel. In a file “BankSimulatorViewer.java”, import necessary packages, and create a class “BankSimulatorViewer”, Define the “main()” method. Create “BankSimulatorFrame” object. Call the method to define the frame operation. Set the frame’s title. Make the frame visible.

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Chapter 20, Problem 6PP

Program Plan Intro

Implementation of a Graphical User Interface (GUI)

Program plan:

In a file “BankAccount.java”, create a class “BankAccount”,

Declare the necessary variables.

Define the constructor to create a bank account with “0” balance.

Define the constructor to create a bank account with a specified balance.

Define the method “getAccountNumber()” to return the account number.

Define the method “deposit()” deposit the amount into the bank account.

Define the method “withdraw()” to debit the amount from the bank account.

Define the method “getBalance()” to return the bank balance.

In a file “BankData.java”, import the packages and create a class “BankData”,

Declare the object variable.

Define the constructor to create a “BankData” object.

Define the method “open()” to open the data file.

Define the method “size()” to return the number of accounts in the file.

Define the method “close()” to close the data file..

Define the method “read()” to read the savings account records.

Define the method “find()” to search the position of a bank account with a given number.

Define the method “write()” to write the savings account record to the data file.

In a file “BankSimulatorFrame.java”, import necessary packages, and create a class “BankSimulatorFrame”,

Declare and initialize the necessary static variables.

Declare the necessary variables.

Define the constructor,

Create an object for “BankData”.

Call the method “setLayout()”.

Call the method “add()” to add the various panel.

Call the method “setSize()” to set the frame size.

Define the method “createLoadPanel()”,

Create a panel.

Create a button “Load”.

Add the button into the panel.

Create Listener class for the button,

Define the method “actionPerformed()”,

Create “JFileChooser” object.

Check the condition for the file chooser,

Execute try statement,

Open the file

Enable the buttons.

Catch if exception occurs.

Call the action listener method.

Return the panel.

Define the panel method “createFindPanel()”,

Create a panel.

Create a button “Find”.

Disable the button.

Add the button into the panel.

Create a button “add”.

Disable the button.

Add the button into the panel.

Create text field.

Add the text field into the panel.

Create a listener class for the buttons,

Define the method “actionPerformed()”,

Execute try statement,

Get the account number.

Search the position of the account number.

Check the condition,

Display the message.

Disable the button.

Otherwise,

Read the current position.

Set the text for the label.

Enable the button.

Catch if “IOException” exception occurs.

Catch if “NumberFormatException” exception occurs.

Call the listener method.

Create a class for button listener,

Define the method “actionPerformed()”,

Get the account number.

Search the position.

Check the condition,

Get the size.

Create a new account.

Call the method “write()”.

Otherwise,

Display the message.

Read the current position.

Set the text.

Enable the button.

Catch if “IOException” exception occurs.

Catch if “NumberFormatException” exception occurs.

Call the method action listener method.

Returns the panel.

Define the method “createBalancePanel()”,

Create a panel.

Create empty label.

Add the label into the panel.

Return the panel.

Define the method “createDepositPanel()”,

Create a panel.

Create a button “Deposit”.

Create and add the label into the panel.

Create and add the text field into the panel.

Add the button into the panel.

Create a listener class for the buttons,

Define the method “actionPerformed()”,

Execute try statement,

Get the amount.

Call the method “deposit()”.

Call the method “write()”.

Set the text.

Enable the button.

Catch if “IOException” exception occurs.

Catch if “NumberFormatException” exception occurs.

Call the listener method.

Returns the panel.

In a file “BankSimulatorViewer.java”, import necessary packages, and create a class “BankSimulatorViewer”,

Define the “main()” method.

Create “BankSimulatorFrame” object.

Call the method to define the frame operation.

Set the frame’s title.

Make the frame visible.

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