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254 changes: 252 additions & 2 deletions Mini-Project/27/README.md
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# 20CYS383 Java Programming Lab
![](https://img.shields.io/badge/Batch-21CYS-lightgreen) ![](https://img.shields.io/badge/UG-blue) ![](https://img.shields.io/badge/Subject-JPL-blue)

### JPL-XX
### Internet and Banking Systems

#### Team Members
Nishant V
Niran R
Mohammed Jasir Faiez



### Code

```
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class InternetBankingSystem extends JFrame {
private JPanel loginPanel;
private JPanel mobileNumberPanel;
private JPanel otpPanel;
private JPanel bankPanel;

// Simulated database (for demonstration purposes only)
private String correctUsername = "Nishant V";
private String correctPassword = "password123";
private String correctMobileNumber = "25817"; // Last 5 digits of the mobile number

public InternetBankingSystem() {
// Set up the main frame
setTitle("Secure Internet Banking");
setSize(500, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLayout(new CardLayout());

// Create panels
loginPanel = new JPanel();
mobileNumberPanel = new JPanel();
otpPanel = new JPanel();
bankPanel = new JPanel();

setupLoginPanel();
setupMobileNumberPanel();
setupOTPPanel();
setupBankPanel();

// Initially, show the login panel
add(loginPanel, "Login");
add(mobileNumberPanel, "MobileNumber");
add(otpPanel, "OTP");
add(bankPanel, "Bank");

showPanel("Login");
}

private void showPanel(String panelName) {
CardLayout cardLayout = (CardLayout) getContentPane().getLayout();
cardLayout.show(getContentPane(), panelName);
}

private void setupLoginPanel() {
loginPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.insets = new Insets(30, 10, 5, 10); // Padding for top, left, bottom, right

JLabel titleLabel = new JLabel("Welcome to Secure Internet Banking");
titleLabel.setFont(new Font("Arial", Font.BOLD, 18));
loginPanel.add(titleLabel, gbc);

gbc.gridy = 1;
JLabel usernameLabel = new JLabel("Username:");
loginPanel.add(usernameLabel, gbc);

gbc.gridy = 2;
JLabel passwordLabel = new JLabel("Password:");
loginPanel.add(passwordLabel, gbc);

gbc.gridx = 1;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
JTextField usernameField = new JTextField(20); // Increased width
loginPanel.add(usernameField, gbc);

gbc.gridy = 2;
JPasswordField passwordField = new JPasswordField(20); // Increased width
loginPanel.add(passwordField, gbc);

gbc.gridy = 3;
gbc.gridx = 0;
gbc.gridwidth = 2;
gbc.anchor = GridBagConstraints.CENTER;
JButton loginButton = new JButton("Login");
loginPanel.add(loginButton, gbc);

loginButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String username = usernameField.getText();
char[] passwordChars = passwordField.getPassword();
String password = new String(passwordChars);

if (!username.isEmpty() && !password.isEmpty()) {
if (username.equals(correctUsername) && password.equals(correctPassword)) {
showPanel("MobileNumber");
} else {
JOptionPane.showMessageDialog(null, "Invalid username or password.");
}
} else {
JOptionPane.showMessageDialog(null, "Please enter both username and password.");
}
// Clear the password field after use
passwordField.setText("");
}
});
}

private void setupMobileNumberPanel() {
mobileNumberPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.insets = new Insets(20, 10, 5, 10); // Padding for top, left, bottom, right

JLabel mobileNumberLabel = new JLabel("Enter the last 5 digits of your mobile number:");
mobileNumberPanel.add(mobileNumberLabel, gbc);

gbc.gridy = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
JTextField mobileNumberField = new JTextField(10);
mobileNumberPanel.add(mobileNumberField, gbc);

gbc.gridy = 2;
gbc.gridx = 0;
gbc.gridwidth = 2;
gbc.anchor = GridBagConstraints.CENTER;
JButton submitMobileNumberButton = new JButton("Submit");
mobileNumberPanel.add(submitMobileNumberButton, gbc);

submitMobileNumberButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String mobileNumber = mobileNumberField.getText();
if (mobileNumber.equals(correctMobileNumber)) {
showPanel("OTP");
} else {
JOptionPane.showMessageDialog(null, "Incorrect mobile number.");
}
// Clear the mobile number field after use
mobileNumberField.setText("");
}
});
}

private void setupOTPPanel() {
otpPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.insets = new Insets(20, 10, 5, 10); // Padding for top, left, bottom, right

JLabel otpMessageLabel = new JLabel("OTP sent to your registered mobile number.");
otpPanel.add(otpMessageLabel, gbc);

gbc.gridy = 1;
JLabel otpLabel = new JLabel("Enter OTP:");
otpPanel.add(otpLabel, gbc);

gbc.gridy = 2;
gbc.fill = GridBagConstraints.HORIZONTAL;
JTextField otpField = new JTextField(10);
otpPanel.add(otpField, gbc);

gbc.gridy = 3;
gbc.gridx = 0;
gbc.gridwidth = 2;
gbc.anchor = GridBagConstraints.CENTER;
JButton submitOtpButton = new JButton("Submit OTP");
otpPanel.add(submitOtpButton, gbc);

gbc.gridy = 4;
JButton resendOtpButton = new JButton("Resend OTP");
otpPanel.add(resendOtpButton, gbc);

submitOtpButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String otp = otpField.getText();

// For this example, just show the bank panel without actual OTP verification
showPanel("Bank");
}
});

resendOtpButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// Simulate OTP resend process
otpMessageLabel.setText("OTP resent to your registered mobile number.");
}
});
}

private void setupBankPanel() {
bankPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.insets = new Insets(20, 10, 5, 10); // Padding for top, left, bottom, right

JButton viewBalanceButton = new JButton("View Balance");
JButton transferAmountButton = new JButton("Transfer Amount");

bankPanel.add(viewBalanceButton, gbc);
gbc.gridy = 1;
bankPanel.add(transferAmountButton, gbc);

// Add action listeners for bank panel buttons
viewBalanceButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// Implement view balance functionality
JOptionPane.showMessageDialog(null, "View Balance functionality is not implemented yet.");
}
});

transferAmountButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// Implement transfer amount functionality
JOptionPane.showMessageDialog(null, "Transfer Amount functionality is not implemented yet.");
}
});
}

public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
InternetBankingSystem bankingSystem = new InternetBankingSystem();
bankingSystem.setVisible(true);
}
});
}
}

```
### Demo

<img src="demo.gif">





### Deliverables