Como crear login en java facíl y sencillo bien explicado | Programación | JAVA | NetBeans

Como crear login en java facíl y sencillo bien explicado | Programación | JAVA | NetBeans.

Te mostramos un tutorial, donde podrás ver como crear un login desde cero, sencillo y fácil de realizar con JAVA en NetBeans.

Video Tutorial:

CÓDIGO

package login; import inicio.home; import java.awt.*; import javax.swing.*; public class login extends javax.swing.JFrame { private Component confirmation; private String usuario,password; public login() { initComponents(); setLocationRelativeTo(null); txtUsuario.setFocusable(true); } public void datos(String us, String pas){ usuario = "Admin"; password = "admin"; } @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { btn_iniciar = new javax.swing.JButton(); btn_cancelar = new javax.swing.JButton(); jLabel1 = new javax.swing.JLabel(); jLabel2 = new javax.swing.JLabel(); txtUsuario = new javax.swing.JTextField(); txtPassword = new javax.swing.JPasswordField(); lbl_titulo = new javax.swing.JLabel(); lbl_banner = new javax.swing.JLabel(); lbl_background = new javax.swing.JLabel(); setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE); setResizable(false); setUndecorated(true); getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout()); btn_iniciar.setBackground(new java.awt.Color(0, 162, 255)); btn_iniciar.setForeground(new java.awt.Color(255, 255, 255)); btn_iniciar.setText("LOGIN"); btn_iniciar.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR)); btn_iniciar.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btn_iniciarActionPerformed(evt); } }); getContentPane().add(btn_iniciar, new org.netbeans.lib.awtextra.AbsoluteConstraints(60, 210, 330, 40)); btn_cancelar.setBackground(new java.awt.Color(0, 162, 255)); btn_cancelar.setForeground(new java.awt.Color(255, 255, 255)); btn_cancelar.setText("CANCELAR"); btn_cancelar.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btn_cancelarActionPerformed(evt); } }); getContentPane().add(btn_cancelar, new org.netbeans.lib.awtextra.AbsoluteConstraints(60, 260, 330, 40)); jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/iconos/user_ico.png"))); // NOI18N getContentPane().add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(60, 90, -1, 40)); jLabel2.setIcon(new javax.swing.ImageIcon(getClass().getResource("/iconos/Power - Lock.png"))); // NOI18N getContentPane().add(jLabel2, new org.netbeans.lib.awtextra.AbsoluteConstraints(60, 140, 40, 40)); txtUsuario.setBackground(new java.awt.Color(224, 224, 224)); txtUsuario.setFont(new java.awt.Font("Tahoma", 0, 16)); // NOI18N txtUsuario.setForeground(new java.awt.Color(23, 160, 249)); getContentPane().add(txtUsuario, new org.netbeans.lib.awtextra.AbsoluteConstraints(110, 90, 280, 40)); txtPassword.setBackground(new java.awt.Color(224, 224, 224)); txtPassword.setFont(new java.awt.Font("Tahoma", 0, 16)); // NOI18N txtPassword.setForeground(new java.awt.Color(23, 160, 249)); getContentPane().add(txtPassword, new org.netbeans.lib.awtextra.AbsoluteConstraints(110, 140, 280, 40)); lbl_titulo.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N lbl_titulo.setForeground(new java.awt.Color(255, 255, 255)); lbl_titulo.setHorizontalAlignment(javax.swing.SwingConstants.CENTER); lbl_titulo.setText("INICIAR SESIÓN"); getContentPane().add(lbl_titulo, new org.netbeans.lib.awtextra.AbsoluteConstraints(150, 20, -1, -1)); lbl_banner.setHorizontalAlignment(javax.swing.SwingConstants.CENTER); lbl_banner.setIcon(new javax.swing.ImageIcon(getClass().getResource("/iconos/banner.png"))); // NOI18N getContentPane().add(lbl_banner, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 450, 60)); lbl_background.setBackground(new java.awt.Color(0, 204, 204)); lbl_background.setIcon(new javax.swing.ImageIcon(getClass().getResource("/iconos/fondo.png"))); // NOI18N getContentPane().add(lbl_background, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 450, 340)); pack(); }// </editor-fold>//GEN-END:initComponents private void btn_cancelarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn_cancelarActionPerformed Object [] opciones ={"Aceptar","Cancelar"}; int eleccion = JOptionPane.showOptionDialog(confirmation,"Desea salir?","Confirmacion", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE,null,opciones,"Aceptar"); if (eleccion == JOptionPane.YES_OPTION) { System.exit(0); }else{ } }//GEN-LAST:event_btn_cancelarActionPerformed private void btn_iniciarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn_iniciarActionPerformed datos(usuario, password); if(usuario.equals(txtUsuario.getText()) && password.equals(txtPassword.getText())){ home st = new home(); st.setVisible(true); this.dispose(); }else if(txtUsuario.getText().equals("") && txtPassword.getText().equals("")){ JOptionPane.showMessageDialog(this,"Usuario y/o Contraseña estan vacios\nIngrese los por favor."); txtUsuario.setFocusable(true); }else if(txtUsuario.getText().equals("")){ JOptionPane.showMessageDialog(this,"Usuario está vacio\nIngrese lo por favor."); txtUsuario.setFocusable(true); }else if(txtPassword.getText().equals("")){ JOptionPane.showMessageDialog(this,"Contraseña está vacio\nIngrese lo por favor."); txtPassword.setFocusable(true); } else if(txtUsuario.getText().compareTo(usuario)!=0 && txtPassword.getText().compareTo(password)!=0){ JOptionPane.showMessageDialog(this,"Usuario y/o Contraseña no válidos\nIngrese nuevamente."); txtUsuario.setFocusable(true); } else if(txtUsuario.getText().compareTo(usuario)!=0){ JOptionPane.showMessageDialog(this,"Usuario no válido\nIngrese nuevamente."); txtUsuario.setFocusable(true); }else if(txtPassword.getText().compareTo(password)!=0){ JOptionPane.showMessageDialog(this,"Contraseña no válida\nIngrese nuevamente."); txtPassword.setFocusable(true); } }//GEN-LAST:event_btn_iniciarActionPerformed /** * @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(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold> /* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { @Override public void run() { new login().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton btn_cancelar; private javax.swing.JButton btn_iniciar; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JLabel lbl_background; private javax.swing.JLabel lbl_banner; private javax.swing.JLabel lbl_titulo; private javax.swing.JPasswordField txtPassword; private javax.swing.JTextField txtUsuario; // End of variables declaration//GEN-END:variables }