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Register and Login form with Java Swing.

Swing is a part of the JFC (Java Foundation Classes). Building Graphical User Interface in Java requires the use of Swings. Swing Framework contains a large set of components which allow a high level of customization and provide rich functionalities, and is used to create window-based applications. Java swing components are lightweight, platform-independent, provide powerful components like tables, scroll panels, buttons, list, colour chooser, etc.

In this blog, we’ll see how to make a Registration form And Login Form.







Tools and Technologies used

  1. JDK 14

  2. Swing

  3. Netbeans IDE


Steps to create login and register forms.


SIGNUP form :

import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.RandomAccessFile;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class SignUp extends JFrame implements ActionListener   {
   JLabel l1, l2, l3, l4, l5, l6, l7, l8;  //all labels for textField
    JTextField tf1, tf2, tf5, tf6, tf7;   // others fields
    JButton btn1, btn2;  //buttons for signup and clear
    JPasswordField p1, p2;  // password fields
    File f = new File("C:\\Files");
    int ln;
   
    
    void createFolder(){
        if(!f.exists()){
            f.mkdirs();
        }
    }
    
    void readFile(){
        try {
            FileReader fr = new FileReader(f+"\\logins.txt");
            System.out.println("file exists!");
        } catch (FileNotFoundException ex) {
            try {
                FileWriter fw = new FileWriter(f+"\\logins.txt");
                System.out.println("File created");
            } catch (IOException ex1) {
               // Logger.getLogger(notepad.class.getName()).log(Level.SEVERE, null, ex1);
            }
        }
        
    }
    
    void addData(String usr,String pswd,String mail,String con,String state,String Phn){
        try {
            RandomAccessFile raf = new RandomAccessFile(f+"\\logins.txt", "rw");
            for(int i=0;i<ln;i++){
                raf.readLine();
            }
            //if condition added after video to have no lines on first entry
            if(ln>0){
            raf.writeBytes("\r\n");
            raf.writeBytes("\r\n");
            }
            raf.writeBytes("Email:"+mail+ "\r\n");
            raf.writeBytes("Password:"+pswd+ "\r\n");
            raf.writeBytes("Username:"+usr+ "\r\n");
            raf.writeBytes("Country:"+con+ "\r\n");
            raf.writeBytes("State:"+state+ "\r\n");
            raf.writeBytes("Phone No:"+Phn);
            
        } catch (FileNotFoundException ex) {
            //Logger.getLogger(notepad.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            //Logger.getLogger(notepad.class.getName()).log(Level.SEVERE, null, ex);
        }
        
    }
    void countLines(){
        try {
            ln=0;
            RandomAccessFile raf = new RandomAccessFile(f+"\\logins.txt", "rw");
            for(int i=0;raf.readLine()!=null;i++){
                ln++;
            }
            System.out.println("number of lines:"+ln);
        } catch (FileNotFoundException ex) {
           // Logger.getLogger(notepad.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
           // Logger.getLogger(notepad.class.getName()).log(Level.SEVERE, null, ex);
        }
        
    }

    SignUp()  
    {  
        setVisible(true);  
        setSize(700, 700);  
        setLayout(null);  
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
        setTitle("Registration Form in Java");  
        l1 = new JLabel("Registration Form in Windows Form:");  
        l1.setForeground(Color.blue);  
        l1.setFont(new Font("Serif", Font.BOLD, 20));  
        l2 = new JLabel("Name:");  
        l3 = new JLabel("Email-ID:");  
        l4 = new JLabel("Create Passowrd:");  
        l5 = new JLabel("Confirm Password:");  
        l6 = new JLabel("Country:");  
        l7 = new JLabel("State:");  
        l8 = new JLabel("Phone No:");   
        tf1 = new JTextField();  
        tf2 = new JTextField();  
        p1 = new JPasswordField();  
        p2 = new JPasswordField();  
        tf5 = new JTextField();  
        tf6 = new JTextField();  
        tf7 = new JTextField();  
        btn1 = new JButton("Submit");  
        btn2 = new JButton("Clear");  
        btn1.addActionListener(this);  
        btn2.addActionListener(this);  
        l1.setBounds(100, 30, 400, 30);  
        l2.setBounds(80, 70, 200, 30);  
        l3.setBounds(80, 110, 200, 30);  
        l4.setBounds(80, 150, 200, 30);  
        l5.setBounds(80, 190, 200, 30);  
        l6.setBounds(80, 230, 200, 30);  
        l7.setBounds(80, 270, 200, 30);  
        l8.setBounds(80, 310, 200, 30);  
        tf1.setBounds(300, 70, 200, 30);  
        tf2.setBounds(300, 110, 200, 30);  
        p1.setBounds(300, 150, 200, 30);  
        p2.setBounds(300, 190, 200, 30);  
        tf5.setBounds(300, 230, 200, 30);  
        tf6.setBounds(300, 270, 200, 30);  
        tf7.setBounds(300, 310, 200, 30);  
        btn1.setBounds(50, 350, 100, 30);  
        btn2.setBounds(170, 350, 100, 30);  
        add(l1);  
        add(l2);  
        add(tf1);  
        add(l3);  
        add(tf2);  
        add(l4);  
        add(p1);  
        add(l5);  
        add(p2);  
        add(l6);  
        add(tf5);  
        add(l7);  
        add(tf6);  
        add(l8);  
        add(tf7);  
        add(btn1);  
        add(btn2);  
    }  
    public void actionPerformed(ActionEvent e)   
    {  
        if (e.getSource() == btn1)  
         {  
            int x = 0;  
            String s1 = tf1.getText();  
            String s2 = tf2.getText();  
            char[] s3 = p1.getPassword();  
            char[] s4 = p2.getPassword();   
            String s8 = new String(s3);  
            String s9 = new String(s4);  
            String s5 = tf5.getText();  
            String s6 = tf6.getText();  
            String s7 = tf7.getText();  
            if (s8.equals(s9))  
            {  
                try  
                {  
                   createFolder();
                   readFile();
                   countLines();
                   addData(s1,s8,s2,s5,s6,s7);
                       
                     
                        JOptionPane.showMessageDialog(btn1, "Data Saved Successfully");   
                }  
                catch (Exception ex)   
                {  
                    System.out.println(ex);  
                }  
            }  
            else  
            {  
                JOptionPane.showMessageDialog(btn1, "Password Does Not Match");  
            }   
          }   
          else  
          {  
            tf1.setText("");  
            tf2.setText("");  
            p1.setText("");  
            p2.setText("");  
            tf5.setText("");  
            tf6.setText("");  
            tf7.setText("");  
          }  
    } 
    public static void main(String args[])  
    {  
        new SignUp();  
    }  

}



login form:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.RandomAccessFile;

public class Login extends JFrame implements ActionListener {

    JLabel l1, l2, l3;   //label for email and password

    JTextField tf1; // email field

    JButton btn1; // login button

    JPasswordField p1; // password field

    File f = new File("C:\\Files");   //file path
    int ln;
    // create folder in which record is save
    void createFolder() {
        if (!f.exists()) {
            f.mkdirs();
        }
    }
    //check file is exist or not
    void readFile() {
        try {
            FileReader fr = new FileReader(f + "\\logins.txt");
            System.out.println("file exists!");
        } catch (FileNotFoundException ex) {
            try {
                FileWriter fw = new FileWriter(f + "\\logins.txt");
                System.out.println("File created");
            } catch (IOException ex1) {
            }
        }

    }
    // login logic 
    void logic(String usr, String pswd) {
        try {
            RandomAccessFile raf = new RandomAccessFile(f + "\\logins.txt", "rw");
            for (int i = 0; i < ln; i += 7) {
                System.out.println("count " + i);

                String forUser = raf.readLine().substring(6);
                String forPswd = raf.readLine().substring(9);
                System.out.println(forUser + forPswd);
                if (usr.equals(forUser) & pswd.equals(forPswd)) {
                    JOptionPane.showMessageDialog(null, "Login Successfully!!");
                    break;
                } else if (i == (ln - 6)) {
                    JOptionPane.showMessageDialog(null, "incorrect username/password");
                    break;
                }
                for (int k = 1; k <= 5; k++) {
                    raf.readLine();
                }
            }
        } catch (FileNotFoundException ex) {
        } catch (IOException ex) {
        }

    }
    //count the number of lines from file
    void countLines() {
        try {
            ln = 0;
            RandomAccessFile raf = new RandomAccessFile(f + "\\logins.txt", "rw");
            for (int i = 0; raf.readLine() != null; i++) {
                ln++;
            }
            System.out.println("number of lines:" + ln);
        } catch (FileNotFoundException ex) {
        } catch (IOException ex) {
        }

    }

    Login() {

        setTitle("Login Form in Windows Form");

        setVisible(true);

        setSize(800, 800);

        setLayout(null);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        l1 = new JLabel("Login Form in Windows Form:");

        l1.setForeground(Color.blue);

        l1.setFont(new Font("Serif", Font.BOLD, 20));

        l2 = new JLabel("Enter Email:");

        l3 = new JLabel("Enter Password:");

        tf1 = new JTextField();

        p1 = new JPasswordField();

        btn1 = new JButton("Submit");

        l1.setBounds(100, 30, 400, 30);

        l2.setBounds(80, 70, 200, 30);

        l3.setBounds(80, 110, 200, 30);

        tf1.setBounds(300, 70, 200, 30);

        p1.setBounds(300, 110, 200, 30);

        btn1.setBounds(150, 160, 100, 30);

        add(l1);

        add(l2);

        add(tf1);

        add(l3);

        add(p1);

        add(btn1);

        btn1.addActionListener(this);

    }

    public void actionPerformed(ActionEvent e) {

        showData();

    }

    public void showData() {

        JFrame f1 = new JFrame();

        JLabel l, l0;

        String str1 = tf1.getText();

        char[] p = p1.getPassword();

        String str2 = new String(p);

        try {

            createFolder();
            readFile();
            countLines();
            logic(str1, str2);

        } catch (Exception ex) {

            System.out.println(ex);

        }
    }
    public static void main(String arr[]) {

        new Login();

    }

}





OUTPUT:

SignUp successful


Login Successful




This is the blog in which register and signup form is build using Java Swing.

thank you for reading.



If you have project or assignment files, You can send atcontact@codersarts.com  directly.

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