Java Login Form + And Show Another Form
In this java Tutorial we will see How To Create A Login Form With Mysql Database And Close The Login Window And Open Another JFrame In Java NetBeans .
Part 1
Part 2
Project Source Code:
package MyPackage;
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.JOptionPane;
public class Java_Login_Form extends javax.swing.JFrame {
/**
* Creates new form Java_Login_Form
*/
public Java_Login_Form() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jTextField_Username = new javax.swing.JTextField();
jPasswordField_Password = new javax.swing.JPasswordField();
jButton_Login = new javax.swing.JButton();
jButton_Cancel = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/JAVA_VIDEOS_TUTORIALS/icons/lock 2.png"))); // NOI18N
jLabel2.setText("Username : ");
jLabel3.setText("Password :");
jButton_Login.setText("Login");
jButton_Login.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton_LoginActionPerformed(evt);
}
});
jButton_Cancel.setText("Cancel");
jButton_Cancel.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton_CancelActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(19, 19, 19)
.addComponent(jLabel1)
.addGap(38, 38, 38)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, 70, Short.MAX_VALUE)
.addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField_Username)
.addComponent(jPasswordField_Password, javax.swing.GroupLayout.DEFAULT_SIZE, 166, Short.MAX_VALUE)))
.addComponent(jButton_Login, javax.swing.GroupLayout.PREFERRED_SIZE, 86, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(105, Short.MAX_VALUE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(263, 263, 263)
.addComponent(jButton_Cancel, javax.swing.GroupLayout.PREFERRED_SIZE, 86, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(265, Short.MAX_VALUE)))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(22, 22, 22)
.addComponent(jLabel1))
.addGroup(layout.createSequentialGroup()
.addGap(65, 65, 65)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jTextField_Username, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(69, 69, 69)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jPasswordField_Password, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(34, 34, 34)
.addComponent(jButton_Login, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(38, Short.MAX_VALUE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(210, Short.MAX_VALUE)
.addComponent(jButton_Cancel, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(36, 36, 36)))
);
pack();
}// </editor-fold>
private void jButton_CancelActionPerformed(java.awt.event.ActionEvent evt) {
System.exit(0);
}
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 * FROM users WHERE username = ? AND password = ?");
ps.setString(1, jTextField_Username.getText());
ps.setString(2, String.valueOf(jPasswordField_Password.getPassword()));
ResultSet rs = ps.executeQuery();
if(rs.next())
{
setVisible(false);
MainForm mf = new MainForm();
mf.setVisible(true);
}else{
JOptionPane.showMessageDialog(this, "Username Or Password Are Invalid");
}
} catch (SQLException ex) {
Logger.getLogger(Java_Login_Form.class.getName()).log(Level.SEVERE, null, ex);
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
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_Login_Form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Java_Login_Form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Java_Login_Form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Java_Login_Form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Java_Login_Form().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton_Cancel;
private javax.swing.JButton jButton_Login;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JPasswordField jPasswordField_Password;
private javax.swing.JTextField jTextField_Username;
// End of variables declaration
}
///////////////OUTPUT:
