Java - How To Create Login Form In Java With MySQL Database

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Java - How To Create Login Window In Java With MySQL Database In Java NetBeans

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In this java Tutorial we will see Make A Login Form Using Java NetBeans And MySQL Database.

*Java Courses : Java Complete Course
Java Swing Course

Part 1

Part 2

Project Source Code:

// Create A JFrame Named "Java_Form_Login"

package javaapp;

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.Timer;

/**
*
* @author 1bestcsharp.blogspot.com
*/
public class Java_Form_Login extends javax.swing.JFrame {

/**
* Creates new form Java_Form_Login
*/
public Java_Form_Login() {
initComponents();
}

// Set Timer
Timer timer1 = new Timer(30, new ActionListener() {

@Override
public void actionPerformed(ActionEvent e) {

if(jPanel_Message.getHeight() != 105){
jPanel_Message.setBounds(0,0,Java_Form_Login.this.getSize().width,jPanel_Message.getHeight() + 5);
if(jPanel_Message.getHeight() == 105){
timer1.stop();
}
}
}
});

Timer timer2 = new Timer(30, new ActionListener() {

@Override
public void actionPerformed(ActionEvent e) {

if(jPanel_Message.getHeight() != 0){
jPanel_Message.setBounds(0,0,Java_Form_Login.this.getSize().width,jPanel_Message.getHeight() - 5);
if(jPanel_Message.getHeight() == 0){
timer2.stop();
}
}
}
});


@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jTextField_Username = new javax.swing.JTextField();
jPasswordField_Password = new javax.swing.JPasswordField();
jCheckBox1 = new javax.swing.JCheckBox();
jButton_Login = new javax.swing.JButton();
jPanel_Message = new javax.swing.JPanel();
jLabel_Message = new javax.swing.JLabel();
jButton_Ok = new javax.swing.JButton();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jPanel1.setBackground(java.awt.Color.decode("#bdb76b")
);

jLabel1.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jLabel1.setText("Username :");

jLabel2.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jLabel2.setText("Password :");

jTextField_Username.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N

jCheckBox1.setText("Show Password");
jCheckBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jCheckBox1ActionPerformed(evt);
}
});

jButton_Login.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jButton_Login.setText("Login");
jButton_Login.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton_LoginActionPerformed(evt);
}
});

jPanel_Message.setBackground(java.awt.Color.decode("#3a5795"));

jLabel_Message.setFont(new java.awt.Font("Verdana", 1, 18)); // NOI18N

jButton_Ok.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
jButton_Ok.setText("Ok");
jButton_Ok.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton_OkActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel_MessageLayout = new javax.swing.GroupLayout(jPanel_Message);
jPanel_Message.setLayout(jPanel_MessageLayout);
jPanel_MessageLayout.setHorizontalGroup(
jPanel_MessageLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel_MessageLayout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel_Message, javax.swing.GroupLayout.PREFERRED_SIZE, 483, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton_Ok, javax.swing.GroupLayout.PREFERRED_SIZE, 65, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(50, 50, 50))
);
jPanel_MessageLayout.setVerticalGroup(
jPanel_MessageLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel_MessageLayout.createSequentialGroup()
.addGroup(jPanel_MessageLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel_MessageLayout.createSequentialGroup()
.addGap(41, 41, 41)
.addComponent(jLabel_Message))
.addGroup(jPanel_MessageLayout.createSequentialGroup()
.addGap(28, 28, 28)
.addComponent(jButton_Ok, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(43, 43, 43)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField_Username, javax.swing.GroupLayout.PREFERRED_SIZE, 214, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jPasswordField_Password)))
.addGap(26, 26, 26)
.addComponent(jCheckBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 115, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 26, Short.MAX_VALUE)
.addComponent(jButton_Login, javax.swing.GroupLayout.PREFERRED_SIZE, 186, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(119, 119, 119))
.addComponent(jPanel_Message, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jPanel_Message, javax.swing.GroupLayout.PREFERRED_SIZE, 0, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(150, 150, 150)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(6, 6, 6)
.addComponent(jButton_Login, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField_Username, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(50, 50, 50)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jPasswordField_Password, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jCheckBox1))))
.addContainerGap(110, Short.MAX_VALUE))
);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);

pack();
setLocationRelativeTo(null);
}// </editor-fold>

// Button Login
private void jButton_LoginActionPerformed(java.awt.event.ActionEvent evt) {

Connection connection;
PreparedStatement ps;
try {
connection = DriverManager.getConnection("jdbc:mysql://localhost/test", "root", "");
ps = connection.prepareStatement("SELECT `username`, `password` FROM `users` WHERE `username` = ? AND `password` = ?");
ps.setString(1, jTextField_Username.getText());
ps.setString(2, String.valueOf(jPasswordField_Password.getPassword()));
ResultSet result = ps.executeQuery();
if(result.next()){
jLabel_Message.setText("Login Successesfully");
jLabel_Message.setForeground(Color.GREEN);
timer1.start();
}
else{
jLabel_Message.setText("Invalide Username Or Password");
jLabel_Message.setForeground(Color.RED);
timer1.start();
}
} catch (SQLException ex) {
Logger.getLogger(Java_Form_Login.class.getName()).log(Level.SEVERE, null, ex);
}
}

private void jButton_OkActionPerformed(java.awt.event.ActionEvent evt) {

timer2.start();
}

// Show And Hide Password Using jCheckBox
private void jCheckBox1ActionPerformed(java.awt.event.ActionEvent evt) {

if(jCheckBox1.isSelected()){
jPasswordField_Password.setEchoChar((char)0);
}else{
jPasswordField_Password.setEchoChar('*');
}
}

public static void main(String args[]) {
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Java_Form_Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Java_Form_Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Java_Form_Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Java_Form_Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}

java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Java_Form_Login().setVisible(true);
}
});
}

// Variables declaration - do not modify
private javax.swing.JButton jButton_Login;
private javax.swing.JButton jButton_Ok;
private javax.swing.JCheckBox jCheckBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel_Message;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel_Message;
private javax.swing.JPasswordField jPasswordField_Password;
private javax.swing.JTextField jTextField_Username;
// End of variables declaration
}