Question

Modify your program from Assignment # 7 part b (see below for code) by creating an interactive GUI application that displays the list of the orders read in from the file (create a data file using your CreateBankFile.java program which has a least 10 bank account records in it and include it with your submission) and the total number of bank accounts. When your program starts it will first read the records from the Bank Account file (AccountRecords.txt) and creates an array of BankAcct objects. The user of the application will then be able to have the bank accounts sorted (sorting the array of BankAcct objects) in the list by either, Customer #, Customer name, or Customer balance. Save your application as GUIBankAcctSorter.java.

Assignment # 7 part b code will be the basis of the above assignment:

Part one;

The Rochester Bank maintains customer records in a random access file. Write an application that creates 10,000 blank records and then allows the user to enter customer account information, including an account number that is 9999 or less, a last name, and a balance. Insert each new record into a data file at a location that a last name, and a balance. Insert each new record into a data file at a location that is equal to the account number. Assume that the user will not enter invalid account numbers. Force each name to eight character, padding it with spaces or truncating it if necessary. Also assume that the user will not enter a bank balance greater than 99,000.00. Save file as CreateBankFile.java

Part 2;

Create an application that uses the file created by the user located above and allows the user to enter an account- number order. Save file as ReadBankAccountsSequentially.java

Answer 1

//import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ScrollPaneConstants;

//This program will the modified program in assignment#7 a to display
//the list of the orders read in the from the file(create a data file using
// your CreateBankFile.java), which will at-least have 10 bank account records in it).
//The total number of bank account will be displayed at the bottom of the GUIBankAcctSorter
public class GUIBankAcctSorter extends JFrame implements ItemListener {

// my own code results and finalResults
String Results = null;
String FinalResults ="";
String ActualNumber;
int Accounts;
ArrayList<String[]> list=new ArrayList<String[]>();
public String StringBuilderw() {
String ProgrammerName = (" bank file");

// this is to accept input from the user
Scanner input = new Scanner(System.in);
final String ID_FORMAT = "000";
final String NAME_FORMAT = " ";
final int NAME_LENGTH = NAME_FORMAT.length();
// final String HOME_STATE = "WI";
final String BALANCE_FORMAT = "0000.00";
String delimiter = ",";
String s = ID_FORMAT + delimiter + NAME_FORMAT + delimiter
+ BALANCE_FORMAT + System.getProperty("line.separator");
final int RECSIZE = s.length();

  
byte data[] = s.getBytes();
// I thought of raping the data before reading it
ByteBuffer buffer = ByteBuffer.wrap(data);
final String EMPTY_CUST = "000";
String[] array = new String[10];
double Balance;
int total = 0;

// try and catch and declare an InputStream and BufferedReader to handle
// reading the file
try {
// I forgot to establish the path to get reading file from
Path file = Paths.get("Bank.txt");

BufferedInputStream iStream = new BufferedInputStream(
Files.newInputStream(file));
BufferedReader reader = new BufferedReader(new InputStreamReader(
iStream));

s = reader.readLine();
  
String test[]=new String[3];

while (s != null) {

array = s.split(delimiter);
if (!array[2].equals(EMPTY_CUST)) {
Balance = Double.parseDouble(array[2]);

// My own code for total of bank accounts
Accounts = Integer.parseInt(array[0]);

// My own code

if (Accounts != 0) {
String CustomerNumber = array[0];
String Names = array[1];
Balance = Double.parseDouble(array[2]);

String ActualResult = ("Cust# " + CustomerNumber
+ " Name " + Names + "Balance $" + Balance + "\n\n");
// total += Balance;
total += 1;

test[0]=array[0];
test[1]=array[1];
test[2]=array[2];
list.add(test);
//cust.add(array[0]);
StringBuilder AllTotalNumber = new StringBuilder();
AllTotalNumber.append(total);
ActualNumber = AllTotalNumber.toString();

FinalResults = FinalResults+ActualResult;
}

}

StringBuilder results = new StringBuilder();

String newline = System.getProperty("line.separator");
  
results.append(FinalResults);
  

  
     

//results.append(s);

// results.append(s1);
Results = results.toString();

s = reader.readLine();

}

// The reader close suppose to be out of while loop or else it won't
// loop
reader.close();

}

catch (Exception ex) {
System.out.println("Error was cought" + ex);
}

return Results;
}

// This code will create a label, a text field and a button to JFrame

JLabel header = new JLabel("Bank Account Sorter");
// I have to make this text field hold multiple text
JTextArea textArea = new JTextArea(StringBuilderw(), 10, 30);

JTextField TotalNumber = new JTextField(ActualNumber);
JLabel sortBy = new JLabel("Sort By");
JLabel totalNumberOfBankAcct = new JLabel("Total # of Bank Accounts");

// JCheckBoxes
JCheckBox boxCustomer = new JCheckBox("Cust#", false);
JCheckBox boxBalance = new JCheckBox("Balance", false);
JCheckBox boxName = new JCheckBox("Name", false);

// This is to make the textField scroll horizontally as need and not always.
// Vertical scroll is as needed as well
JScrollPane scroll = new JScrollPane(textArea);

// This is to set a font for JLabel header to be big
private Font bigFont = new Font("Arial", Font.BOLD, 20);

public GUIBankAcctSorter() {

super("Bank Account Sorter");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLayout(new FlowLayout());
// adding components to JFrame
add(header);
header.setFont(bigFont);
// I decide to show scroll not textArea
scroll.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);

add(scroll);

// textArea.add(scroll);
// add(textArea);
// textArea.setEditable(false);
// scroll.setBounds(5, 5, 300, 200);
add(sortBy);
add(boxCustomer);
add(boxBalance);
add(boxName);
add(totalNumberOfBankAcct);
add(TotalNumber);
TotalNumber.setEditable(false);
textArea.setEditable(false);

// Registering the class as listener for events
// generated by each three JCheckBoxes

boxCustomer.addItemListener(this);
boxBalance.addItemListener(this);
boxName.addItemListener(this);

}

@Override
public void itemStateChanged(ItemEvent event) {
Object Source = event.getSource();
int Select = event.getStateChange();

// This is were I define what happens when
// boxCustomer CheckBox is selected
if (Source == boxCustomer) {

// this is to check if boxCustomer is selected
// then the other check boxes should not be checked
if (boxCustomer.isSelected()) {
boxName.setSelected(false);
boxBalance.setSelected(false);
}

}

// this is to see if boxCustomer is sure selected from
// event.getStateChange() method
if (Select == ItemEvent.SELECTED) {
// code here
// Sort elements in an object array(bauble sort) using customer

}

// This is were I define what happens when
// boxName CheckBox is select

if (Source == boxName) {

// this is to check if boxName is selected
// then the other check boxes should not be checked
if (boxName.isSelected()) {

boxCustomer.setSelected(false);
boxBalance.setSelected(false);
}
StringBuilder results = new StringBuilder();
String table[][]=new String[list.size()][];
table=list.toArray(table);
Arrays.sort(table[0]);
for(int j=0;j<=list.size()-1;j++){
   for(int k=j;k<1;k++){
         
       results.append("Cust# " + table[j][k] + " Name " + table[j][k+1] + "Balance $" + table[j][k+2] + "\n\n");
     
   }

}


}
// this is to see if boxCustomer is sure selected from
// event.getStateChange() method
if (Select == ItemEvent.SELECTED) {
// code here
// Sort elements in an object array(bauble sort) using Names
}

// This is were I define what happens when
// boxBalance CheckBox is select
if (Source == boxBalance) {
// this is to check if boxBalance is selected
// then the other checkboxes should not be checked
if (boxBalance.isSelected()) {

boxCustomer.setSelected(false);
boxName.setSelected(false);

}
// this is to see if boxCustomer is sure selected from
// event.getStateChange() method
if (Select == ItemEvent.SELECTED) {
// code here
// Sort elements in an object array(bauble sort) using balance
}

}
}

// Main Method
public static void main(String[] args) {
GUIBankAcctSorter gui = new GUIBankAcctSorter();
gui.setSize(450, 350);
gui.setVisible(true);
gui.setResizable(false);

}

}

Output Screenshot:-

Bank Account Sorter Bank Account Sorter S Smith E Mushinge Balance $76543.0 egrggushinge Balance $7543.0 gmith dravo Balance $10000.0 Cust# 1 Name Balance $8765.0 Cust# Cust# Cus饼 Cust# 2 Name 3Name 4Name 5 Name Balance $8654.0 Cust# □ Balance □Name Total # of Bank Accounts 6