Question

26) Implement a GUI based java program which should have a login page and should take in
ID and password as login credentials. Then it should display all the notes that were
previously saved by the user. It should give him the option to delete previous notes and
also add new notes.​

Answer 1

Answer:

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Explanation:

follow me

Answer 2

Answer:

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class LoginDemo extends JFrame implements ActionListener {

  JPanel panel;

  JLabel user_label, password_label, message;

  JTextField userName_text;

  JPasswordField password_text;

  JButton submit, cancel;

  LoginDemo() {

     // Username Label

     user_label = new JLabel();

     user_label.setText("User ID :");

     userName_text = new JTextField();

     // Password Label

     password_label = new JLabel();

     password_label.setText("Password :");

     password_text = new JPasswordField();

     // Submit

     submit = new JButton("SUBMIT");

     panel = new JPanel(new GridLayout(3, 1));

     panel.add(user_label);

     panel.add(userName_text);

     panel.add(password_label);

     panel.add(password_text);

     message = new JLabel();

     panel.add(message);

     panel.add(submit);

     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

     // Adding the listeners to components..

     submit.addActionListener(this);

     add(panel, BorderLayout.CENTER);

     setTitle("Please Login Here !");

     setSize(450,350);

     setVisible(true);

  }

  public static void main(String[] args) {

     new LoginDemo();

  }

  @Override

  public void actionPerformed(ActionEvent ae) {

     String userName = userName_text.getText();

     String password = password_text.getText();

     if (userName.trim().equals("admin") && password.trim().equals("admin")) {

        message.setText(" Hello " + userName + "");

     } else {

        message.setText(" Invalid user.. ");

     }

  }

}

Explanation:

The above java program will give hello message on successful login and display Notes. Other wise display Invalid user message.