In Java please . Write a program that provides a way for you to store and retrie

Question

In Java please. Write a program that provides a way for you to store and retrieve telephone numbers. It has three classes Person Class, PhoneBook class, and Menu Class. Design a console program that provides the following operations:

Add: Adds a person’s name and phone number to the phone book.

Delete: Deletes a given person’s name and phone number from the phone book, given only the name.

Find: Locates a person’s phone number, given only the person’s name.

Change: Changes a person’s phone number, given the person’s name and new phone number.

Quit: Quits the application, after first saving the phone book in a text file.

You can proceed as follows:

- Design and implement the class Person, which represents the name and phone number of a person. You will store instances of this class in the phone book.

-Design and implement the class PhoneBook, which represents the phone book. The class should contain a binary search tree as a data field. This tree contains the people in the book.

-Add methods that use a text file to save and restore the tree.

- Design and implement the class Menu, which provides the program’s user interface.

The program should read data from a text file when it begins and save data into the text file when the user quits the program

Explanation / Answer

1.Create a new Project and select Java App
2.Rename Project Name to Contacts
3.Delete file Contacts.java
4.Add New JFrame Form under package Contacts and change class Name to GUI
5.Drag and drop java Swing controller into frame. check the code in GUI given below and you can change the position of button based on your requirement.
6.Add new JFrame Form under package Contacts and change class name to AddEdit.
7.Drag and drop java swing controller into frame.
8.please create two Java Classes. Contacts.java and ContactUtility.java.
9.Copy and paste the code behind of each java class and java frame.

GUI code :

import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author dd
*/
public class MainUserInterface extends javax.swing.JFrame {

/**
* Creates new form MainGUIInterface
*/
public MainUserInterface() {
initComponents();
this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
this.addWindowListener(getWindowAdapter());
jTable1.getTableHeader().setFont(new java.awt.Font("Verdana", 0, 11));
//load customers into ArrayList
ContactUtility.readCustomerCustomer();
//bind into JTable
BindIntoJTable();
}

//make public and for enable to access from another class
public static void BindIntoJTable() {
//clear jTable First
jTable1.removeAll();
List<Contacts> AllContacts = ContactUtility.getAllCustomer();
if (AllContacts != null) {
int index = 1;
String colNames[] = {"No","Name", "Contacts No", "Email Address"};
DefaultTableModel dtm = new DefaultTableModel(null, colNames);

for (int i = 0; i < AllContacts.size(); i++) {
dtm.addRow(new String[4]);
}
jTable1.setModel(dtm);

if (AllContacts.size() > 0) {
int row = 0;
for (Contacts c : AllContacts) {
jTable1.setValueAt(Integer.toString(index), row, 0);
jTable1.setValueAt(c.getName(), row, 1);
jTable1.setValueAt(c.getPhoneNo(), row, 2);
jTable1.setValueAt(c.getEmailAddress(), row, 3);
index++;
row++;
}
jTable1.getColumn("No").setMaxWidth(30);
jTable1.getColumn("Name").setMaxWidth(130);
jTable1.getColumn("Contacts No").setMaxWidth(110);
jTable1.getColumn("Email Address").setMaxWidth(110);
jTextStatus.setText("Finish Load Contacts," + Integer.toString(AllContacts.size())
+ " records found");
}else{
jTextStatus.setText("Finish Load Contacts, No record Found");
}
}
}

private WindowAdapter getWindowAdapter() {
return new WindowAdapter() {
@Override
public void windowClosing(WindowEvent we) {//override to show message
super.windowClosing(we);
if (JOptionPane.showConfirmDialog(null, "Are you sure to close this application?",
"Confirmation Box", JOptionPane.OK_CANCEL_OPTION) == 0) { //clicked ok
CloseApp();
}
}
};
}

public void CloseApp() {
this.dispose();
}

/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jTextStatus = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jTextSearch = new javax.swing.JTextField();
jButton4 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Phone Contacts - Group");
setResizable(false);

jScrollPane1.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N

jTable1.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null},
{null, null, null},
{null, null, null},
{null, null, null}
},
new String [] {
"Name", "Contacts No", "Email Address"
}
));
jScrollPane1.setViewportView(jTable1);

jButton1.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jButton1.setText("Add Contacts");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jButton2.setText("Edit");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jButton3.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jButton3.setText("Delete");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});

jTextStatus.setBackground(new java.awt.Color(153, 153, 153));
jTextStatus.setFont(new java.awt.Font("Verdana", 3, 11)); // NOI18N
jTextStatus.setToolTipText("This is a Application Status");
jTextStatus.setBorder(javax.swing.BorderFactory.createEmptyBorder(1, 1, 1, 1));
jTextStatus.setDisabledTextColor(new java.awt.Color(255, 255, 255));
jTextStatus.setEnabled(false);

jLabel1.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
jLabel1.setForeground(new java.awt.Color(0, 102, 102));
jLabel1.setText("Search Contacts");

jTextSearch.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N

jButton4.setText("Search");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});

jButton5.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jButton5.setText("Reload Contacts");
jButton5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton5ActionPerformed(evt);
}
});

jMenu1.setText("About Application");
jMenu1.addMenuListener(new javax.swing.event.MenuListener() {
public void menuCanceled(javax.swing.event.MenuEvent evt) {
}
public void menuDeselected(javax.swing.event.MenuEvent evt) {
}
public void menuSelected(javax.swing.event.MenuEvent evt) {
jMenu1MenuSelected(evt);
}
});
jMenuBar1.add(jMenu1);

setJMenuBar(jMenuBar1);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextStatus)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(jTextSearch, javax.swing.GroupLayout.PREFERRED_SIZE, 303, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton4))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton5)))
.addGap(0, 3, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(17, 17, 17)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton2)
.addComponent(jButton3)
.addComponent(jButton5)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextSearch, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton4))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 208, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jTextStatus, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, 0))
);

pack();
setLocationRelativeTo(null);
}// </editor-fold>

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
//Add Contacts
AddEdit Form = new AddEdit();
Form.setFormMode(true);//true for add mode
Form.UpdateStatus();
Form.setVisible(true);
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
int row = jTable1.getSelectedRow();
//if row is -1 mean user have not select any row yet
if(row != -1){

String nama = (String)jTable1.getValueAt(row,1);//cast object to string
String PhoneNo = (String)jTable1.getValueAt(row,2);//cast object to string
String email = (String)jTable1.getValueAt(row,3);//cast object to string

Contacts C = new Contacts();
C.setEmailAddress(email);
C.setName(nama);
C.setPhoneNo(PhoneNo);

AddEdit dlg = new AddEdit();
dlg.setFormMode(false);//true for add mode
dlg.MapTextBox(C);
dlg.UpdateStatus();
dlg.setVisible(true);
}


}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
int row = jTable1.getSelectedRow();
//if row is -1 mean user have not select any row yet
if(row != -1){
String nama = (String)jTable1.getValueAt(row,1);//cast object to string
String PhoneNo = (String)jTable1.getValueAt(row,2);//cast object to string
String email = (String)jTable1.getValueAt(row,3);//cast object to string

Contacts C = new Contacts();
C.setEmailAddress(email);
C.setName(nama);
C.setPhoneNo(PhoneNo);

if (JOptionPane.showConfirmDialog(null, "Are you sure to delete Contacts : " + nama + "?",
"Confirmation Box", JOptionPane.OK_CANCEL_OPTION) == 0) { //clicked ok
ContactUtility.deleteCustomer(C);
}
}
}

private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
//reload Contacts
ContactUtility.readCustomerCustomer();
BindIntoJTable();
}

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
String searchValue = jTextSearch.getText();
List<Contacts> Contacts = ContactUtility.searchCustomer(searchValue);
ContactUtility.setAllCustomer(Contacts);
BindIntoJTable();
}

private void jMenu1MenuSelected(javax.swing.event.MenuEvent evt) {
// do nothing
}

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.

*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Windows".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(MainUserInterface.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>

/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new MainUserInterface().setVisible(true);
}
});
}

// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JButton jButton5;
private javax.swing.JLabel jLabel1;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JScrollPane jScrollPane1;
private static javax.swing.JTable jTable1;
private javax.swing.JTextField jTextSearch;
private static javax.swing.JTextField jTextStatus;
// End of variables declaration
}

AddEdit code :

import javax.swing.JOptionPane;

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/

/**
*
* @author developersnote
*/
public class AddEdit extends javax.swing.JFrame {

private boolean formMode;// true for add, false for edit
private Contacts editCustomerDetails;


/**
* Creates new form AddEdit
*/
public AddEdit() {
initComponents();
}

public void UpdateStatus(){
if(formMode){
jTextStatus.setText("Add Contacts Mode");
jButton1.setText(formMode ? "Save" : "Update");
}else{
jTextStatus.setText("Edit Contacts Mode");
jButton1.setText(formMode ? "Save" : "Update");
}
}

public void MapTextBox(Contacts c){
if(c != null){
JTextName.setText(c.getName());
JTextPhone.setText(c.getPhoneNo());
jTextEmail.setText(c.getEmailAddress());
editCustomerDetails = c;
}
}

protected void CloseDialog()
{
this.dispose();
}

/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
JTextName = new javax.swing.JTextField();
JTextPhone = new javax.swing.JTextField();
jLabel3 = new javax.swing.JLabel();
jTextEmail = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jTextStatus = new javax.swing.JTextField();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setResizable(false);

jLabel1.setFont(new java.awt.Font("Verdana", 1, 14)); // NOI18N
jLabel1.setForeground(new java.awt.Color(0, 102, 102));
jLabel1.setText("Contacts Information");

jLabel2.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jLabel2.setText("Name");

JTextName.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N

JTextPhone.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
JTextPhone.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
JTextPhoneKeyPressed(evt);
}
});

jLabel3.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jLabel3.setText("Contacts No");

jTextEmail.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N

jLabel4.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jLabel4.setText("Email Address");

jButton1.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jButton1.setText("Save");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setFont(new java.awt.Font("Verdana", 0, 11)); // NOI18N
jButton2.setText("Cancel");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jTextStatus.setBackground(new java.awt.Color(153, 153, 153));
jTextStatus.setFont(new java.awt.Font("Verdana", 3, 11)); // NOI18N
jTextStatus.setForeground(new java.awt.Color(255, 255, 255));
jTextStatus.setToolTipText("This is a Contacts Information Status");
jTextStatus.setBorder(javax.swing.BorderFactory.createEmptyBorder(1, 1, 1, 1));
jTextStatus.setDisabledTextColor(new java.awt.Color(255, 255, 255));
jTextStatus.setEnabled(false);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(20, 20, 20)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel4)
.addComponent(jTextEmail, javax.swing.GroupLayout.PREFERRED_SIZE, 270, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3)
.addComponent(JTextPhone, javax.swing.GroupLayout.PREFERRED_SIZE, 270, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2)
.addComponent(jLabel1)
.addComponent(JTextName, javax.swing.GroupLayout.PREFERRED_SIZE, 270, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addContainerGap(23, Short.MAX_VALUE))
.addComponent(jTextStatus)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(23, 23, 23)
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(JTextName, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(JTextPhone, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextEmail, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 23, Short.MAX_VALUE)
.addComponent(jTextStatus, javax.swing.GroupLayout.PREFERRED_SIZE, 17, javax.swing.GroupLayout.PREFERRED_SIZE))
);

pack();
setLocationRelativeTo(null);
}// </editor-fold>

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
CloseDialog();
}

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
String Name = JTextName.getText();
String Phone = JTextPhone.getText();
String Email = jTextEmail.getText();
String buildCustomer = "";

if(!Name.isEmpty()){
buildCustomer += Name + ",";
}else {
buildCustomer += "NULL" + ",";
}

if(!Phone.isEmpty()){
buildCustomer += Phone + ",";
}else {
buildCustomer += "NULL" + ",";
}

if(!Email.isEmpty()){
buildCustomer += Email + ",";
}else {
buildCustomer += "NULL" + ",";
}

buildCustomer = buildCustomer.substring(0,buildCustomer.length() -1);

if(formMode){
if(CustomersUtility.appendTextCustomer(buildCustomer + " ")){
JOptionPane.showMessageDialog(null,"Successfully add Contacts : " + Name);
CustomersUtility.readPhoneCustomers(); // re read Contacts file to reload arrayList
MainUserInterface.BindIntoJTable();
CloseDialog();
}else{
JOptionPane.showMessageDialog(null,"Failed to add Contacts : " + Name);
}
}else{
if(CustomersUtility.updateCustomer(editCustomerDetails.getName(),
editCustomerDetails.getPhoneNo(),
editCustomerDetails.getEmailAddress(), buildCustomer)){
JOptionPane.showMessageDialog(null,"Successfully update Contacts : " + Name);
CustomersUtility.readPhoneCustomers(); // re read Contacts file to reload arrayList
MainUserInterface.BindIntoJTable();
CloseDialog();
}else{
JOptionPane.showMessageDialog(null,"Failed to update Contacts : " + Name);
}
}

}

private void JTextPhoneKeyPressed(java.awt.event.KeyEvent evt) {
if(JTextPhone.getText().length() == 12){
JTextPhone.setText(JTextPhone.getText().substring(0,JTextPhone.getText().length() -1));
}
}

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.

*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Windows".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(AddEdit.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>

/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new AddEdit().setVisible(true);
}
});
}

// Variables declaration - do not modify
private javax.swing.JTextField JTextName;
private javax.swing.JTextField JTextPhone;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JTextField jTextEmail;
private javax.swing.JTextField jTextStatus;
// End of variables declaration

/**
* @return the formMode
*/
public boolean isFormMode() {
return formMode;
}

/**
* @param formMode the formMode to set
*/
public void setFormMode(boolean formMode) {
this.formMode = formMode;
}

/**
* @return the editCustomerDetails
*/
public Contacts getEditCustomerDetails() {
return editCustomerDetails;
}

/**
* @param editCustomerDetails the editCustomerDetails to set
*/
public void setEditCustomerDetails(Contacts editCustomerDetails) {
this.editCustomerDetails = editCustomerDetails;
}
}

Contacts.java

public class Contacts {

private String Name;
private String PhoneNo;
private String EmailAddress;

public Contacts()
{
Name = "";
PhoneNo = "";
EmailAddress = "";
}

/**
* @return the Name
*/
public String getName() {
return Name;
}

/**
* @param Name the Name to set
*/
public void setName(String Name) {
this.Name = Name;
}

/**
* @return the PhoneNo
*/
public String getPhoneNo() {
return PhoneNo;
}

/**
* @param PhoneNo the PhoneNo to set
*/
public void setPhoneNo(String PhoneNo) {
this.PhoneNo = PhoneNo;
}

/**
* @return the EmailAddress
*/
public String getEmailAddress() {
return EmailAddress;
}

/**
* @param EmailAddress the EmailAddress to set
*/
public void setEmailAddress(String EmailAddress) {
this.EmailAddress = EmailAddress;
}

}

ContactUtility.java

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author developersnote
*/
public class CustomersUtility {

private static List<Contacts> AllContacts;
private static String MessageStatus;
public static final String CustomerFileName = "Customers.txt";

/**
* @return the MessageStatus
*/
public static String getMessageStatus() {
return MessageStatus;
}

/**
* @param aMessageStatus the MessageStatus to set
*/
public static void setMessageStatus(String aMessageStatus) {
MessageStatus = aMessageStatus;
}

public CustomersUtility() {
AllContacts = new ArrayList<Contacts>();
}

public static boolean updateCustomer(String name, String PhoneNo, String emailAdd, String NewStringLine) {
BufferedReader br = null;
String ReWrite = "";
boolean success = false;
try {
if (new File(CustomerFileName).exists()) {
br = new BufferedReader(new FileReader(CustomerFileName));
String line = "";
while ((line = br.readLine()) != null) {
if (!"".equals(line)) {
String[] _temp = line.split(",");
if (_temp[0].equalsIgnoreCase(name) && _temp[1].equalsIgnoreCase(PhoneNo)
&& _temp[2].equalsIgnoreCase(emailAdd)) {
ReWrite += NewStringLine + " ";
} else {
ReWrite += line + " ";
}
}
}
br.close();

if (writeFile(ReWrite)) {
success = true;
} else {
success = false;
}
//update ArrayList with new Contacts List
readPhoneCustomers();

} else {
new File(CustomerFileName).createNewFile();
readPhoneCustomers();
success = false;
}
} catch (FileNotFoundException ex) {
MessageStatus = ex.getMessage();
success = false;
} catch (IOException ex) {
MessageStatus = ex.getMessage();
success = false;
}
return success;
}

public static List<Contacts> searchCustomer(String searchValue) {
List<Contacts> cnt = new ArrayList<>();
BufferedReader br = null;

try {
if (new File(CustomerFileName).exists()) {
br = new BufferedReader(new FileReader(CustomerFileName));
String line = "";
while ((line = br.readLine()) != null) {
if (!"".equals(line)) {
String[] _temp = line.split(",");
if (_temp[0].equalsIgnoreCase(searchValue) || _temp[1].equalsIgnoreCase(searchValue)
|| _temp[2].equalsIgnoreCase(searchValue)) {
Contacts c = new Contacts();
c.setName(_temp[0]);
c.setPhoneNo(_temp[1]);
c.setEmailAddress(_temp[2]);
cnt.add(c);
}
}
}
} else {
new File(CustomerFileName).createNewFile();
cnt = searchCustomer(searchValue);
}
} catch (FileNotFoundException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage());
} catch (IOException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage());
} finally {
try {
br.close();
} catch (IOException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage());
}
}

return cnt;
}

protected static boolean writeFile(String TextToWrite) {
FileWriter writer = null;
boolean successfulWrite = false;
try {
writer = new FileWriter(CustomerFileName);
writer.write(TextToWrite);
writer.close();
successfulWrite = true;
} catch (IOException ex) {
successfulWrite = false;
MessageStatus = ex.getMessage();
} finally {
try {
writer.close();
} catch (IOException ex) {
MessageStatus = ex.getMessage();
}
}
return successfulWrite;
}

public static void deleteCustomers(Contacts C) {
BufferedReader br = null;
String ReWrite = "";
try {
if (new File(CustomerFileName).exists()) {
br = new BufferedReader(new FileReader(CustomerFileName));
String line = "";
while ((line = br.readLine()) != null) {
String[] _temp = line.split(",");
if (_temp[0].equalsIgnoreCase(C.getName()) && _temp[1].equalsIgnoreCase(C.getPhoneNo())
&& _temp[2].equalsIgnoreCase(C.getEmailAddress())) {
//ignore line to delete this Contacts
} else {
ReWrite += line + " ";
}
}
br.close();

if (writeFile(ReWrite)) {
JOptionPane.showMessageDialog(null, "Successfully delete Contacts " + C.getName());
} else {
JOptionPane.showMessageDialog(null, "Failed to delete Contacts " + C.getName());
}

CustomersUtility.readPhoneCustomers();
MainUserInterface.BindIntoJTable();

} else {
new File(CustomerFileName).createNewFile();
readPhoneCustomers();
}
} catch (FileNotFoundException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage());
} catch (IOException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage());
}
}

public static void readPhoneCustomers() {
//read Customers file and store into arraylist of Object(Contacts)
BufferedReader br = null;
try {
if (new File(CustomerFileName).exists()) {

if (AllContacts == null) {
AllContacts = new ArrayList<>();
} else {
AllContacts.clear();
}
br = new BufferedReader(new FileReader(CustomerFileName));
StringBuilder sb = new StringBuilder();
String line = "";
Contacts CustomerClass = null;
while ((line = br.readLine()) != null) {
if (!line.equalsIgnoreCase("")) {
CustomerClass = new Contacts();
String[] _temp = line.split(",");
String _tempValue = _temp[0];
if (_tempValue.equalsIgnoreCase("NULL")) {
_tempValue = "";
}
CustomerClass.setName(_tempValue);

_tempValue = _temp[1];
if (_tempValue.equalsIgnoreCase("NULL")) {
_tempValue = "";
}
CustomerClass.setPhoneNo(_tempValue);

_tempValue = _temp[2];
if (_tempValue.equalsIgnoreCase("NULL")) {
_tempValue = "";
}
CustomerClass.setEmailAddress(_tempValue);
AllContacts.add(CustomerClass);
}
}
} else {
new File(CustomerFileName).createNewFile();
readPhoneCustomers();
}

} catch (NullPointerException | IOException ex) {
JOptionPane.showMessageDialog(null, ex.getMessage());
} finally {
if (br != null) {
try {
br.close();
} catch (IOException ex) {
Logger.getLogger(CustomersUtility.class.getName()).log(Level.SEVERE, null, ex);
}
}
}

}

public static boolean appendTextCustomer(String appendValue) {
boolean success = false;
try {
PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(CustomerFileName, true)));
out.println(appendValue);
out.close();
success = true;
} catch (IOException e) {
JOptionPane.showMessageDialog(null, e.getMessage());
}
return success;
}

/**
* @return the AllContacts
*/
public static List<Contacts> getAllCustomers() {
return AllContacts;
}

/**
* @param aAllCustomers the AllContacts to set
*/
public static void setAllCustomers(List<Contacts> aAllCustomers) {
AllContacts = aAllCustomers;
}

}

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