Develop a Java program that creates a simple GUI application for a passwordvalidator. The program should allow users to input a password and check ifit meets certain criteria.Requirements:Window with password input, "Check Password" button, result label.Validate password: ≥8 chars, ≥1 uppercase, ≥1 lowercase, ≥1 digit.(7)
Question
Develop a Java program that creates a simple GUI application for a passwordvalidator. The program should allow users to input a password and check ifit meets certain criteria.Requirements:Window with password input, "Check Password" button, result label.Validate password: ≥8 chars, ≥1 uppercase, ≥1 lowercase, ≥1 digit.(7)
Solution
Sure, here is a simple Java program that creates a GUI application for a password validator:
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class PasswordValidator {
private static JTextField passwordField;
private static JLabel resultLabel;
public static void main(String[] args) {
JFrame frame = new JFrame("Password Validator");
frame.setSize(300, 200);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel();
frame.add(panel);
placeComponents(panel);
frame.setVisible(true);
}
private static void placeComponents(JPanel panel) {
panel.setLayout(null);
JLabel userLabel = new JLabel("Password:");
userLabel.setBounds(10, 20, 80, 25);
panel.add(userLabel);
passwordField = new JTextField(20);
passwordField.setBounds(100, 20, 165, 25);
panel.add(passwordField);
JButton loginButton = new JButton("Check Password");
loginButton.setBounds(10, 80, 120, 25);
panel.add(loginButton);
resultLabel = new JLabel("");
resultLabel.setBounds(10, 110, 300, 25);
panel.add(resultLabel);
loginButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String password = passwordField.getText();
if (isValidPassword(password)) {
resultLabel.setText("Password is valid.");
} else {
resultLabel.setText("Password is invalid.");
}
}
});
}
private static boolean isValidPassword(String password) {
if (password.length() < 8) {
return false;
}
boolean hasUppercase = !password.equals(password.toLowerCase());
boolean hasLowercase = !password.equals(password.toUpperCase());
boolean hasDigit = password.matches(".*\\d.*");
return hasUppercase && hasLowercase && hasDigit;
}
}
This program creates a simple GUI with a text field for password input, a "Check Password" button, and a label to display the result. When the button is clicked, it checks if the password meets the criteria (at least 8 characters, at least 1 uppercase letter, at least 1 lowercase letter, and at least 1 digit) and displays the result.
Similar Questions
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