Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

//This is my login class file rt java.awt.BorderLayout; public class Login { pub

ID: 3678904 • Letter: #

Question

//This is my login class file

rt java.awt.BorderLayout;

public class Login

{

   public static void main(String[] args)

   {

      LoginGUI frame = new LoginGUI();

      frame.setTitle("Login");

      frame.setVisible(true);

      frame.setSize(300,350);

      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

   }

}

// This is my LoginGUI

import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.border.*;
import java.io.*;
import java.util.*;
import javax.swing.JOptionPane;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class LoginGUI extends JFrame
{
   private JTextField txtStudentID;
   private JTextField txtUser;
   private JPasswordField txtPass;
   private JLabel lblStudentID;
   private JLabel lblUser;
   private JLabel lblPass;
  
   private JButton btnLogin;
   private JButton btnExit;
   private JPanel panel1;
  
   public LoginGUI()
   {
      setLayout(new BorderLayout(10,10));
      panel1 = new JPanel();
      panel1.setPreferredSize(new Dimension(350, 350));
    
      txtStudentID = new JTextField();
      txtStudentID.setPreferredSize(new Dimension(150,25));
    
      txtUser = new JTextField();
      txtUser.setPreferredSize(new Dimension(150,25));
    
      txtPass = new JPasswordField(15);
     txtPass.setEchoChar('*');
      txtPass.setPreferredSize(new Dimension(150,25));
    
      lblStudentID = new JLabel("Student ID: ");
      lblStudentID.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
      lblStudentID.setForeground(Color.BLUE);
      lblUser = new JLabel("Username: ");
      lblUser.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
      lblUser.setForeground(Color.BLUE);
      lblPass = new JLabel("Password: ");
      lblPass.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
      lblPass.setForeground(Color.BLUE);
    
      btnLogin = new JButton("Login");
      btnLogin.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
      btnLogin.setForeground(Color.RED);
      btnExit = new JButton("Exit");
      btnExit.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
      btnExit.setForeground(Color.RED);
    
      panel1.add(lblStudentID);
      panel1.add(txtStudentID);
      panel1.add(lblUser);
      panel1.add(txtUser);
      panel1.add(lblPass);
      panel1.add(txtPass);
      panel1.add(btnLogin);
      panel1.add(btnExit);
    
    
      ActionListener LoginAction = new LoginListener();
      btnLogin.addActionListener(LoginAction);
    
    
      ActionListener ExitAction = new ExitListener();
      btnExit.addActionListener(ExitAction);
      add(panel1, BorderLayout.CENTER);
   
   }
  
   class ExitListener implements ActionListener
   {
      public void actionPerformed(ActionEvent event)
      {
         System.exit(0);
      }
   }
  
   class LoginListener implements ActionListener
   {
      public void actionPerformed(ActionEvent event)
      {
         int valid = validate(event, txtStudentID, txtUser, txtPass);
      
         if (valid == 0)
         {
            JOptionPane.showMessageDialog(null, "Your user account has been validated!");
         }
         else
         {
            JOptionPane.showMessageDialog(null, "Your Username or Password is incorrect. Please try again");
         }
         txtUser.setText("");
         txtPass.setText("");
      }
   }
  
   private static int validate(ActionEvent event, JTextField txtStudentID, JTextField txtUser, JTextField txtPass)
{
      int errors = 0;
                       
      String studentID = txtStudentID.getText();
      if(errors == 0)
      {
         try
         {
            Long.parseLong(studentID);
         }
         catch(Exception ex)
         {
            errors++;
            JOptionPane.showMessageDialog(null, "Invalid input. Please enter a valid student ID");
         }
      }
            
      String username = txtUser.getText();
      if(errors == 0)
      {
         if(username.length() == 0)
         {
            errors++;
            JOptionPane.showMessageDialog(null, "Invalid input. Please enter a valid username");
         }
      }
   
      String password = txtPass.getText().trim();
      if(errors == 0)
      {
         if(password.length() == 0 || password.length() < 10)
         {
            errors++;
            JOptionPane.showMessageDialog(null, "Invalid input. Password is less than 10 characters");
         }
      
         if(password.contains(",") && errors == 0)
         {
            errors++;
            JOptionPane.showMessageDialog(null, "Invalid input. Password cannot contain a comma");
         }
      
         if(checkForOneUppercase(password) == false && errors == 0)
         {
            errors++;
            JOptionPane.showMessageDialog(null, "Invalid input. Password must contain at least one uppercase letter");
         }
                                 
         if(checkForOneDigit(password) == false && errors == 0)
         {
            errors++;
            JOptionPane.showMessageDialog(null, "Invalid input. Password must contain at least one digit");
         }
                
         if(checkForBlanks(password) == true && errors == 0)
         {
            errors++;
            JOptionPane.showMessageDialog(null, "Invalid input. Password must not contain blank spaces");
         }
      }
      return errors;
   }
            
   private static boolean checkForOneUppercase(final String upperCase)
   {
      if(upperCase != null)
      {
         for (int i = 0; i < upperCase.length(); i++)
         {
            char c = upperCase.charAt(i);
            if (Character.isLetter(c))
            {
               if (Character.isUpperCase(c))
               {
                  return true;
               }
            }
         }
      }
      return false;
   }
  
   private static boolean checkForOneDigit(final String digit)
   {
      if(digit != null)
      {
         for (int i = 0; i < digit.length(); i++)
         {
            char c = digit.charAt(i);
            try
            {
               int>                return true;
            }
            catch(Exception e)
            {
           }
         }
      }
      return false;
   }
  
   public static boolean checkForBlanks(final String blanks)
   {
      if(blanks != null)
      {
         for(int i = 0; i < blanks.length(); i++)
         {
            if(Character.isWhitespace(blanks.charAt(i)))
            {
               return true;
            }
         }
      }
      return false;
   }
  
   class Validate
   {
      ArrayList<Person> persons = new ArrayList<Person>();
      
      public Validate()
      {
         add();
      }
      
      public void add()
      {
         Person user1 = new Person ("USER1", "fBqj!P4B33", (long) 900000003);
         Person user2 = new Person ("USER2", "2Hmkq98NW+", (long) 900000006);
         Person user3 = new Person ("USER3", "_SNT8wsz85", (long) 900000009);
         Person user4 = new Person ("USER4", "5LDz2H%t3t", (long) 900000013);
         Person user5 = new Person ("USER5", "at!tbX92FC", (long) 900000016);
      
         persons.add(user1);
         persons.add(user2);
         persons.add(user3);
         persons.add(user4);
         persons.add(user5);
      }
      
      public Boolean Verify(String u, String p, String id)
      {
         Person temp = new Person(u, p, Long.parseLong(id));
         for (Person person:persons)
         {
            if (person.compareTo(temp) == 0)
            {
               return true;
            }
         }
         return false;
      }
   }
}
            
    

// This is my person class file

public class Person implements Comparable

{

   private String username;

   private String password;

   private Long StudentID;

   public Person(String User, String Pass, Long ID)

   {

      this.username = User;

      this.password = Pass;

      this.StudentID = ID;

   }

   public String getPassword ()

   {

      return this.password;

   }

   public String getUsername()

   {

     return this.username;

   }

public Long getStudentID()

   {

      return this.StudentID;

   }

   @Override

   public int compareTo(Object o)

   {

      Person temp = (Person)o;

      if (this.username == temp.username && this.password == temp.password && this.StudentID == temp.StudentID)

      {

         return 0;

      }

      else

      {

         return -1;

      }

   }

}

-the use of a "counter" to allow the user 3 failed attempts. - If the user fails three times to input the correct information, then the system will lockout for 15 seconds. - You should show a countdown window by seconds only, not the entire system time.

Explanation / Answer

Solution:

package com.nancy.experiment;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.ArrayList;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.Timer;

public class LoginGUI extends JFrame implements PropertyChangeListener, ActionListener
{
private JTextField txtStudentID;
private JTextField txtUser;
private JPasswordField txtPass;
private JLabel lblStudentID;
private JLabel lblUser;
private JLabel lblPass;
  
private JButton btnLogin;
private JButton btnExit;
private JPanel panel1;

private final JOptionPane optionPane = new JOptionPane();
private static final int TIME_OUT = 15;
private static int counter = TIME_OUT;
private final Timer timer = new Timer(1000, this);
private JDialog dialogBox = new JDialog();
private static int counting = 0;
  
public LoginGUI()
{
setLayout(new BorderLayout(10,10));
panel1 = new JPanel();
panel1.setPreferredSize(new Dimension(350, 350));
  
txtStudentID = new JTextField();
txtStudentID.setPreferredSize(new Dimension(150,25));
  
txtUser = new JTextField();
txtUser.setPreferredSize(new Dimension(150,25));
  
txtPass = new JPasswordField(15);
txtPass.setEchoChar('*');
txtPass.setPreferredSize(new Dimension(150,25));
  
lblStudentID = new JLabel("Student ID: ");
lblStudentID.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
lblStudentID.setForeground(Color.BLUE);
lblUser = new JLabel("Username: ");
lblUser.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
lblUser.setForeground(Color.BLUE);
lblPass = new JLabel("Password: ");
lblPass.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
lblPass.setForeground(Color.BLUE);
  
btnLogin = new JButton("Login");
btnLogin.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
btnLogin.setForeground(Color.RED);
btnExit = new JButton("Exit");
btnExit.setFont(new Font("NEW TIMES ROMAN",Font.ITALIC,15));
btnExit.setForeground(Color.RED);
  
panel1.add(lblStudentID);
panel1.add(txtStudentID);
panel1.add(lblUser);
panel1.add(txtUser);
panel1.add(lblPass);
panel1.add(txtPass);
panel1.add(btnLogin);
panel1.add(btnExit);
  
  
ActionListener LoginAction = new LoginListener();
btnLogin.addActionListener(LoginAction);
  
  
ActionListener ExitAction = new ExitListener();
btnExit.addActionListener(ExitAction);
add(panel1, BorderLayout.CENTER);

}
  
class ExitListener implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
System.exit(0);
}
}

public void createWindow() {
timer.setCoalesce(false);
optionPane.setMessage(message());
optionPane.setMessageType(JOptionPane.INFORMATION_MESSAGE);
optionPane.setOptionType(JOptionPane.DEFAULT_OPTION);
optionPane.addPropertyChangeListener(this);
dialogBox.add(optionPane);
dialogBox.pack();
add(new JLabel(this.getTitle(), JLabel.CENTER));
dialogBox.setLocationRelativeTo(this);
dialogBox.setVisible(true);
timer.start();
}
  
public void propertyChange(PropertyChangeEvent e) {
String prop = e.getPropertyName();
if (JOptionPane.VALUE_PROPERTY.equals(prop)) {
function();
}
}

public void actionPerformed(ActionEvent e) {
counter--;
optionPane.setMessage(message());
if (counter == 0) {
function();
setEnabled(true);
           panel1.setEnabled(true);
}
timer.restart();
}

private String message() {
return "Window closing in " + counter + " seconds.Please wait.";
}

private void function() {
dialogBox.setVisible(false);
dialogBox.dispatchEvent(new WindowEvent(
dialogBox, WindowEvent.WINDOW_CLOSING));
}
class LoginListener implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
int valid = validate(event, txtStudentID, txtUser, txtPass);
  
if (valid == 0)
{
JOptionPane.showMessageDialog(null, "Your user account has been validated!");
}
else
{
JOptionPane.showMessageDialog(null, "Your Username or Password is incorrect. Please try again");
  
if(counting == 3) {
   JOptionPane.showMessageDialog(null, "failing " + counting + " attempts.Please wait for 15 min.");
   counting = 0;
        counter = TIME_OUT;
   setEnabled(false);
   panel1.setEnabled(false);
   createWindow();
   try {
                   wait();
               } catch (InterruptedException e) {
                   e.printStackTrace();
               }
  
}
  
}

txtUser.setText("");
txtPass.setText("");
}
}
  
private static int validate(ActionEvent event, JTextField txtStudentID, JTextField txtUser, JTextField txtPass)
{
int errors = 0;

String studentID = txtStudentID.getText();
if(errors == 0)
{
try
{
Long.parseLong(studentID);
}
catch(Exception ex)
{
errors++;
counting++;
JOptionPane.showMessageDialog(null, "Invalid input. Please enter a valid student ID");
}
}
  
String username = txtUser.getText();
if(errors == 0)
{
if(username.length() == 0)
{
errors++;
counting++;
JOptionPane.showMessageDialog(null, "Invalid input. Please enter a valid username");
}
}

String password = txtPass.getText().trim();
if(errors == 0)
{
if(password.length() == 0 || password.length() < 10)
{
errors++;
JOptionPane.showMessageDialog(null, "Invalid input. Password is less than 10 characters");
}
  
if(password.contains(",") && errors == 0)
{
errors++;
JOptionPane.showMessageDialog(null, "Invalid input. Password cannot contain a comma");
}
  
if(checkForOneUppercase(password) == false && errors == 0)
{
errors++;
JOptionPane.showMessageDialog(null, "Invalid input. Password must contain at least one uppercase letter");
}

if(checkForOneDigit(password) == false && errors == 0)
{
errors++;
JOptionPane.showMessageDialog(null, "Invalid input. Password must contain at least one digit");
}
  
if(checkForBlanks(password) == true && errors == 0)
{
errors++;
JOptionPane.showMessageDialog(null, "Invalid input. Password must not contain blank spaces");
}
if(errors>0)
   counting++;
}
return errors;
}
  
private static boolean checkForOneUppercase(final String upperCase)
{
if(upperCase != null)
{
for (int i = 0; i < upperCase.length(); i++)
{
char c = upperCase.charAt(i);
if (Character.isLetter(c))
{
if (Character.isUpperCase(c))
{
return true;
}
}
}
}
return false;
}
  
private static boolean checkForOneDigit(final String digit)
{
if(digit != null)
{
for (int i = 0; i < digit.length(); i++)
{
char c = digit.charAt(i);
try
{
int> return true;
}
catch(Exception e)
{
}
}
}
return false;
}
  
public static boolean checkForBlanks(final String blanks)
{
if(blanks != null)
{
for(int i = 0; i < blanks.length(); i++)
{
if(Character.isWhitespace(blanks.charAt(i)))
{
return true;
}
}
}
return false;
}
  
class Validate
{
ArrayList<Person> persons = new ArrayList<Person>();
  
public Validate()
{
add();
}
  
public void add()
{
Person user1 = new Person ("USER1", "fBqj!P4B33", (long) 900000003);
Person user2 = new Person ("USER2", "2Hmkq98NW+", (long) 900000006);
Person user3 = new Person ("USER3", "_SNT8wsz85", (long) 900000009);
Person user4 = new Person ("USER4", "5LDz2H%t3t", (long) 900000013);
Person user5 = new Person ("USER5", "at!tbX92FC", (long) 900000016);
  
persons.add(user1);
persons.add(user2);
persons.add(user3);
persons.add(user4);
persons.add(user5);
}
  
public Boolean Verify(String u, String p, String id)
{
Person temp = new Person(u, p, Long.parseLong(id));
for (Person person:persons)
{
if (person.compareTo(temp) == 0)
{
return true;
}
}
return false;
}
}
}

____________________________________

Related Questions

//Program 1 main () {int vai =5; main() {int child = forkO; int x = 5; if (child
Question #3798892
//Program in Java please public class SelectionSorter { //Returns the index of t
Question #3828528
//Program needs to follow basic skeleton (Methods, and main) here I provided. Tr
Question #3801690
//Program to demonstrate use of the Stack class. #include <iostream> #include \"
Question #3581429
//Program.cs using System; namespace Midterm { /// /// Midterm - complete the mi
Question #3657209
//Program.cs using System; namespace Midterm { /// /// Midterm - complete the mi
Question #3657396
//Program.cs using System; namespace Midterm { /// <summary> /// Midterm - compl
Question #3657405
//Purpose: This program displays a student\'s classification (e.g., \"freshman\"
Question #3655465

Navigate

Previous
//This is my login class file rt java.awt.BorderLayout; public class Login { pub
Next
//This is perfectly working code. in this code whenever the input requirement( l

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.