Matheus Alves da Silva

Gente estou tendo problemas em meu código java, estou usando o Form JFrame para criar uma tela de Login e senha, mas sempre que digito esses campo o NetBeans mostra esse tal de java.lang.NullPointerException. Estou errando em alguma coisa? vou mandar o código das duas classes abaixo: Classe FábricaDeConexao package br.com.loginteste.conexao; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; import javax.swing.JOptionPane; /** * * @author Matheus */ public class FabricaDeConexao { public Connection con; public Statement stmt; public ResultSet rs; String url = "jdbc:mysql://localhost:3306/testelogin"; String driver = "com.mysql.jdbc.Driver"; String user = "root"; String password = "root"; public void abrirConexao(){ try { Class.forName(driver).newInstance(); con = DriverManager.getConnection(url, user, password); stmt = con.createStatement(); } catch (Exception e) { JOptionPane.showMessageDialog(null, "Erro na conexão do banco de dados","Erro", JOptionPane.ERROR_MESSAGE, null); } } /** public static void main(String[] args){ FabricaDeConexao fab = new FabricaDeConexao(); fab.abrirConexao(); }*/ } Classe Login package br.com.loginteste.visao; import br.com.loginteste.conexao.FabricaDeConexao; import java.sql.SQLException; import javax.swing.JOptionPane; /** * * @author Matheus */ public class Login extends javax.swing.JFrame { /** * Creates new form Login */ public Login() { initComponents(); } public void acessarSistema(){ try { FabricaDeConexao fab = new FabricaDeConexao(); fab.abrirConexao(); fab.stmt = fab.con.createStatement(); String sql = "SELECT * FROM LOGIN"; fab.rs.first(); if(txtNome.getText().equals(fab.rs.getString("nome")) && ptxtSenha.getText().equals(fab.rs.getString("senha"))){ JOptionPane.showMessageDialog(null, "Acesso Permitido"); }else{ JOptionPane.showMessageDialog(null, "Acesso Negado"); } } catch (SQLException e) { } } /** * 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() { jPanel1 = new javax.swing.JPanel(); jButton1 = new javax.swing.JButton(); jButton2 = new javax.swing.JButton(); jLabel1 = new javax.swing.JLabel(); jLabel2 = new javax.swing.JLabel(); ptxtSenha = new javax.swing.JPasswordField(); txtNome = new javax.swing.JTextField(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jButton1.setText("Entrar"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); jButton2.setText("Sair"); jLabel1.setText("Nome:"); jLabel2.setText("Senha"); ptxtSenha.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { ptxtSenhaActionPerformed(evt); } }); txtNome.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { txtNomeActionPerformed(evt); } }); 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(48, 48, 48) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jLabel2) .addComponent(jLabel1) .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 76, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addComponent(txtNome) .addComponent(ptxtSenha, javax.swing.GroupLayout.DEFAULT_SIZE, 123, Short.MAX_VALUE) .addComponent(jButton2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.PREFERRED_SIZE, 74, javax.swing.GroupLayout.PREFERRED_SIZE)) .addContainerGap(82, Short.MAX_VALUE)) ); jPanel1Layout.setVerticalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup() .addGap(65, 65, 65) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel1) .addComponent(txtNome, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(23, 23, 23) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel2) .addComponent(ptxtSenha, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 89, Short.MAX_VALUE) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jButton1) .addComponent(jButton2)) .addGap(38, 38, 38)) ); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addContainerGap()) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addContainerGap()) ); pack(); }// </editor-fold> private void txtNomeActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: } private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { acessarSistema(); } private void ptxtSenhaActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: } /** * @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() { public void run() { new Login().setVisible(true); } }); } // Variables declaration - do not modify private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JPanel jPanel1; private javax.swing.JPasswordField ptxtSenha; private javax.swing.JTextField txtNome; // End of variables declaration }