Java-OOP-GUI-Phonebook

This Java application demonstrates object-oriented programming (OOP) principles by encapsulating contact management functionality within a class. Users can add, edit, delete, and clear contacts in a table.

Class Definition

public class jframe1 extends javax.swing.JFrame {

The jframe1 class extends javax.swing.JFrame, making it a Swing frame (window) that can contain other Swing components.

Instance Variables

private DefaultTableModel tableModel;

tableModel is an instance of DefaultTableModel, which is used to manage the data displayed in the JTable.

Constructor

public jframe1() {
    initComponents();
    tableModel = new DefaultTableModel(new Object[][] {}, new String[]{"Name", "Email", "Phone"});
    jTable1.setModel(tableModel);
}

The constructor initializes the components of the frame and sets up the table model with columns "Name", "Email", and "Phone".

initComponents Method

private void initComponents() {
    // Component initialization code
}

This method is auto-generated by the NetBeans IDE and contains the code to initialize and layout the GUI components. It includes labels, text fields, buttons, and a table.

Action Listeners

The code defines several action listeners for the buttons:

Add Button

private void AddActionPerformed(java.awt.event.ActionEvent evt) {
    String name = jTextField1.getText();
    String email = jTextField2.getText();
    String phone = jTextField3.getText();
    // Validation and adding row to table
}

This method retrieves the text from the input fields, validates them, and adds a new row to the table if the inputs are valid.

Edit Button

private void EditActionPerformed(java.awt.event.ActionEvent evt) {
    int selectedRow = jTable1.getSelectedRow();
    // Load selected row data into input fields
}

This method loads the data from the selected row in the table into the input fields for editing.

Clear All Button

private void ClearAllActionPerformed(java.awt.event.ActionEvent evt) {
    tableModel.setRowCount(0);
    clearFormFields();
}

This method clears all rows from the table and resets the input fields.

Delete Button

private void DeleteActionPerformed(java.awt.event.ActionEvent evt) {
    int selectedRow = jTable1.getSelectedRow();
    // Remove selected row from table
}

This method deletes the selected row from the table.

Confirm Edit Button

private void ConfirmEditActionPerformed(java.awt.event.ActionEvent evt) {
    int selectedRow = jTable1.getSelectedRow();
    // Update selected row with new data from input fields
}

This method updates the selected row in the table with the data from the input fields after validation.

Validation Methods

The code includes methods to validate the input fields:

Email Validation

private boolean isValidEmail(String email) {
    String emailRegex = "^[a-zA-Z0-9_+&*-]+(?:\\.[a-zA-Z0-9_+&*-]+)*@(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,7}$";
    return email.matches(emailRegex);
}

This method checks if the email matches a regular expression pattern.

Phone Validation

private boolean isValidPhone(String phone) {
    String phoneRegex = "^(010|011|012|015)[0-9]{8}$";
    return phone.matches(phoneRegex);
}

This method checks if the phone number matches a specific pattern for Egyptian mobile numbers.

Name Validation

private boolean isValidName(String name) {
    String nameRegex = "^[a-zA-Z\\s]+$";
    return name.matches(nameRegex);
}

This method checks if the name contains only letters and spaces

Utility Method

private void clearFormFields() {
    jTextField1.setText("");
    jTextField2.setText("");
    jTextField3.setText("");
}

This method clears the text fields.

Main Method

This code provides a basic contact management application with a GUI, allowing users to perform CRUD (Create, Read, Update, Delete) operations on a contacts list

contacts.private boolean isValidName(String name) {
    String nameRegex = "^[a-zA-Z\\s]+$";
    return name.matches(nameRegex);
}

This method checks if the name contains only letters and spaces.

This code provides a basic contact management application with a GUI, allowing users to Create, Read, Update, Delete operations on a list of contacts.