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‎Mini-Project/27/README.md

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# 20CYS383 Java Programming Lab
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![](https://img.shields.io/badge/Batch-21CYS-lightgreen) ![](https://img.shields.io/badge/UG-blue) ![](https://img.shields.io/badge/Subject-JPL-blue)
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### JPL-XX
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### Secure Internet Banking
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#### Team Members
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### Code
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```
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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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public class InternetBankingSystem extends JFrame {
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private JPanel loginPanel;
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private JPanel mobileNumberPanel;
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private JPanel otpPanel;
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private JPanel bankPanel;
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// Simulated database (for demonstration purposes only)
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private String correctUsername = "Nishant V";
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private String correctPassword = "password123";
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private String correctMobileNumber = "25817"; // Last 5 digits of the mobile number
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public InternetBankingSystem() {
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// Set up the main frame
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setTitle("Secure Internet Banking");
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setSize(500, 300);
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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setLayout(new CardLayout());
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// Create panels
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loginPanel = new JPanel();
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mobileNumberPanel = new JPanel();
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otpPanel = new JPanel();
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bankPanel = new JPanel();
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setupLoginPanel();
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setupMobileNumberPanel();
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setupOTPPanel();
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setupBankPanel();
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// Initially, show the login panel
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add(loginPanel, "Login");
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add(mobileNumberPanel, "MobileNumber");
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add(otpPanel, "OTP");
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add(bankPanel, "Bank");
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showPanel("Login");
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}
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private void showPanel(String panelName) {
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CardLayout cardLayout = (CardLayout) getContentPane().getLayout();
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cardLayout.show(getContentPane(), panelName);
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}
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private void setupLoginPanel() {
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loginPanel.setLayout(new GridBagLayout());
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GridBagConstraints gbc = new GridBagConstraints();
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gbc.gridx = 0;
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gbc.gridy = 0;
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gbc.insets = new Insets(30, 10, 5, 10); // Padding for top, left, bottom, right
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JLabel titleLabel = new JLabel("Welcome to Secure Internet Banking");
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titleLabel.setFont(new Font("Arial", Font.BOLD, 18));
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loginPanel.add(titleLabel, gbc);
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gbc.gridy = 1;
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JLabel usernameLabel = new JLabel("Username:");
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loginPanel.add(usernameLabel, gbc);
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gbc.gridy = 2;
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JLabel passwordLabel = new JLabel("Password:");
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loginPanel.add(passwordLabel, gbc);
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gbc.gridx = 1;
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gbc.gridy = 1;
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gbc.fill = GridBagConstraints.HORIZONTAL;
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JTextField usernameField = new JTextField(20); // Increased width
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loginPanel.add(usernameField, gbc);
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gbc.gridy = 2;
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JPasswordField passwordField = new JPasswordField(20); // Increased width
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loginPanel.add(passwordField, gbc);
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gbc.gridy = 3;
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gbc.gridx = 0;
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gbc.gridwidth = 2;
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gbc.anchor = GridBagConstraints.CENTER;
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JButton loginButton = new JButton("Login");
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loginPanel.add(loginButton, gbc);
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loginButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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String username = usernameField.getText();
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char[] passwordChars = passwordField.getPassword();
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String password = new String(passwordChars);
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if (!username.isEmpty() && !password.isEmpty()) {
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if (username.equals(correctUsername) && password.equals(correctPassword)) {
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showPanel("MobileNumber");
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} else {
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JOptionPane.showMessageDialog(null, "Invalid username or password.");
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}
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} else {
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JOptionPane.showMessageDialog(null, "Please enter both username and password.");
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}
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// Clear the password field after use
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passwordField.setText("");
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}
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});
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}
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private void setupMobileNumberPanel() {
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mobileNumberPanel.setLayout(new GridBagLayout());
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GridBagConstraints gbc = new GridBagConstraints();
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gbc.gridx = 0;
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gbc.gridy = 0;
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gbc.insets = new Insets(20, 10, 5, 10); // Padding for top, left, bottom, right
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JLabel mobileNumberLabel = new JLabel("Enter the last 5 digits of your mobile number:");
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mobileNumberPanel.add(mobileNumberLabel, gbc);
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gbc.gridy = 1;
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gbc.fill = GridBagConstraints.HORIZONTAL;
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JTextField mobileNumberField = new JTextField(10);
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mobileNumberPanel.add(mobileNumberField, gbc);
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gbc.gridy = 2;
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gbc.gridx = 0;
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gbc.gridwidth = 2;
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gbc.anchor = GridBagConstraints.CENTER;
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JButton submitMobileNumberButton = new JButton("Submit");
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mobileNumberPanel.add(submitMobileNumberButton, gbc);
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submitMobileNumberButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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String mobileNumber = mobileNumberField.getText();
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if (mobileNumber.equals(correctMobileNumber)) {
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showPanel("OTP");
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} else {
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JOptionPane.showMessageDialog(null, "Incorrect mobile number.");
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}
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// Clear the mobile number field after use
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mobileNumberField.setText("");
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}
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});
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}
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private void setupOTPPanel() {
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otpPanel.setLayout(new GridBagLayout());
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GridBagConstraints gbc = new GridBagConstraints();
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gbc.gridx = 0;
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gbc.gridy = 0;
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gbc.insets = new Insets(20, 10, 5, 10); // Padding for top, left, bottom, right
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JLabel otpMessageLabel = new JLabel("OTP sent to your registered mobile number.");
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otpPanel.add(otpMessageLabel, gbc);
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gbc.gridy = 1;
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JLabel otpLabel = new JLabel("Enter OTP:");
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otpPanel.add(otpLabel, gbc);
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gbc.gridy = 2;
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gbc.fill = GridBagConstraints.HORIZONTAL;
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JTextField otpField = new JTextField(10);
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otpPanel.add(otpField, gbc);
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gbc.gridy = 3;
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gbc.gridx = 0;
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gbc.gridwidth = 2;
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gbc.anchor = GridBagConstraints.CENTER;
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JButton submitOtpButton = new JButton("Submit OTP");
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otpPanel.add(submitOtpButton, gbc);
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gbc.gridy = 4;
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JButton resendOtpButton = new JButton("Resend OTP");
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otpPanel.add(resendOtpButton, gbc);
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submitOtpButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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String otp = otpField.getText();
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// For this example, just show the bank panel without actual OTP verification
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showPanel("Bank");
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}
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});
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resendOtpButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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// Simulate OTP resend process
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otpMessageLabel.setText("OTP resent to your registered mobile number.");
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}
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});
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}
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private void setupBankPanel() {
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bankPanel.setLayout(new GridBagLayout());
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GridBagConstraints gbc = new GridBagConstraints();
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gbc.gridx = 0;
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gbc.gridy = 0;
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gbc.insets = new Insets(20, 10, 5, 10); // Padding for top, left, bottom, right
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JButton viewBalanceButton = new JButton("View Balance");
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JButton transferAmountButton = new JButton("Transfer Amount");
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bankPanel.add(viewBalanceButton, gbc);
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gbc.gridy = 1;
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bankPanel.add(transferAmountButton, gbc);
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// Add action listeners for bank panel buttons
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viewBalanceButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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// Implement view balance functionality
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JOptionPane.showMessageDialog(null, "View Balance functionality is not implemented yet.");
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}
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});
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transferAmountButton.addActionListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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// Implement transfer amount functionality
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JOptionPane.showMessageDialog(null, "Transfer Amount functionality is not implemented yet.");
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}
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});
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}
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public static void main(String[] args) {
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SwingUtilities.invokeLater(new Runnable() {
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@Override
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public void run() {
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InternetBankingSystem bankingSystem = new InternetBankingSystem();
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bankingSystem.setVisible(true);
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}
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});
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}
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}
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```
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### Demo
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<p align="center">
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<img src="Assets/demo.gif" width=800>
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</p>
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### Deliverables
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