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
JDK 14
Swing
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.
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