Inserir linha em jTable

Assuntos Gerais
#1

Oi, entre essa parte do meu código eu gostaria de adicionar linahs com os valores que o sql conseguir recuperar, como eu faço isso?

while( rs.next() ) { //PREENCHER COLUNA jtTabelaAlunos. //adicionar linha aqui com os valores de baixo System.out.println( rs.getString("alcodigo") ); System.out.println( rs.getString("alnome") ); }

Ja tentei jTabelaAlunos.addRow() e não da certo

#2

Implemente um TableModel…

http://java.sun.com/javase/6/docs/api/javax/swing/table/DefaultTableModel.html

T+

#3

Vou ser sincero, não entendi nada. Eu to começando em java e ainda não saco muito bem disso de implementar.

#4

Olá

Dê uma ótima lida nesse tutorial da SUN, com certeza ele vai te ajudar muito a mexer no JTable que é um dos componente mais dificil de serem manipulados, na minha opinião só perde para o JTree.

#5

Eu tenho que fazer algum import?

#6

Olá

Sim
De qual classe vc esta falando?

#7

Do JTable, eu andei lendo tando nos tutoriais do GUJ e no fórum que tem o método que adiciona uma linha em branco no JTable, porem eu faço jtTableAlunos.addRow() e da erro.

Por isso perguntei se tinha que fazer algum import sobre o TableMode, eu tenho essa JTable dentro de uma tab no meu JFrame.

#8

Olá

O TableModel esta no pacote javax.swing.table.*
e o JTabel dentro de
javax.swing.*

#9

Quer dizer que mesmo com o JTable na UI eu tenho que importar ele?

Mesmo com os imports o addRow não apareceu.

#10

[quote=flaviotomazio]Quer dizer que mesmo com o JTable na UI eu tenho que importar ele?

Mesmo com os imports o addRow não apareceu.[/quote]
Se você faz uma referencia direta a uma classe na sua classe vc tem de importa-la.

#11

Deixa eu postar o fonte:
Não sei porque essa porcaria não quer aceitar o addRow, eu tento tento e nada.

package visual;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;

public class FormAluno extends javax.swing.JDialog {
    
    String url = "";
    String acaoCadastro = "";
    Statement st;
    PreparedStatement pst;
    Connection con;
    
    /** Creates new form FormAluno */
    public FormAluno(java.awt.Frame parent, boolean modal) {
        super(parent, modal);
        initComponents();
        this.setLocationRelativeTo(null);
        desabilitaBotao();
        try {
            Class.forName("org.firebirdsql.jdbc.FBDriver");
            con = DriverManager.getConnection("jdbc:firebirdsql://localhost/C:/ProjetoIntegrador/database/DBSISTEMA.FDB","SYSDBA","masterkey");
            st = con.createStatement();
            System.out.println("Conexão efetuada com sucesso.");
        } catch (SQLException ex) {
            ex.printStackTrace();
            JOptionPane.showMessageDialog(this,"Ocorreu um erro ao tentar acessar o banco!","Ops",JOptionPane.ERROR_MESSAGE);
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
            JOptionPane.showMessageDialog(this,"Ocorreu um erro ao tentar acessar o banco!","Ops",JOptionPane.ERROR_MESSAGE);
        }
    }
    
    /** 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.
     */
    // <editor-fold defaultstate="collapsed" desc=" Código Gerado ">                          
    private void initComponents() {
        jbtnSair = new javax.swing.JButton();
        jtpAlunos = new javax.swing.JTabbedPane();
        jpPesquisaAlunos = new javax.swing.JPanel();
        jLabel6 = new javax.swing.JLabel();
        jtfNomePesquisa = new javax.swing.JTextField();
        jbtnPesquisar = new javax.swing.JButton();
        jspTabela = new javax.swing.JScrollPane();
        jtTabelaAlunos = new javax.swing.JTable();
        jpCadastroAlunos = new javax.swing.JPanel();
        jPanel1 = new javax.swing.JPanel();
        jbtnNovo = new javax.swing.JButton();
        jbtnAlterar = new javax.swing.JButton();
        jbtnExcluir = new javax.swing.JButton();
        jbtnSalvar = new javax.swing.JButton();
        jbtnCancelar = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jtfCodigo = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        jtfNome = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        jtfTelefone = new javax.swing.JTextField();
        jtfEmail = new javax.swing.JTextField();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jScrollPane2 = new javax.swing.JScrollPane();
        jtaObservacao = new javax.swing.JTextArea();
        jpAulasAluno = new javax.swing.JPanel();
        jScrollPane1 = new javax.swing.JScrollPane();
        jtAulasAlunos = new javax.swing.JTable();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        setTitle("Cadastro de Alunos");
        setResizable(false);
        jbtnSair.setIcon(new javax.swing.ImageIcon("C:\\ProjetoIntegrador\\src\\resources\\clearFilter.gif"));
        jbtnSair.setText("Sair");
        jbtnSair.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtnSairActionPerformed(evt);
            }
        });

        jLabel6.setText("Nome aluno:");

        jbtnPesquisar.setIcon(new javax.swing.ImageIcon("C:\\ProjetoIntegrador\\src\\resources\\liveResults.gif"));
        jbtnPesquisar.setText("Pesquisar");
        jbtnPesquisar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtnPesquisarActionPerformed(evt);
            }
        });

        jtTabelaAlunos.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {

            },
            new String [] {
                "Código", "Nome", "Telefone", "E-mail"
            }
        ) {
            Class[] types = new Class [] {
                java.lang.Integer.class, java.lang.String.class, java.lang.String.class, java.lang.String.class
            };
            boolean[] canEdit = new boolean [] {
                false, false, false, false
            };

            public Class getColumnClass(int columnIndex) {
                return types [columnIndex];
            }

            public boolean isCellEditable(int rowIndex, int columnIndex) {
                return canEdit [columnIndex];
            }
        });
        jspTabela.setViewportView(jtTabelaAlunos);

        javax.swing.GroupLayout jpPesquisaAlunosLayout = new javax.swing.GroupLayout(jpPesquisaAlunos);
        jpPesquisaAlunos.setLayout(jpPesquisaAlunosLayout);
        jpPesquisaAlunosLayout.setHorizontalGroup(
            jpPesquisaAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jpPesquisaAlunosLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel6)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jtfNomePesquisa, javax.swing.GroupLayout.PREFERRED_SIZE, 349, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jbtnPesquisar, javax.swing.GroupLayout.DEFAULT_SIZE, 125, Short.MAX_VALUE)
                .addContainerGap())
            .addComponent(jspTabela, javax.swing.GroupLayout.DEFAULT_SIZE, 564, Short.MAX_VALUE)
        );
        jpPesquisaAlunosLayout.setVerticalGroup(
            jpPesquisaAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jpPesquisaAlunosLayout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jpPesquisaAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addGroup(jpPesquisaAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jtfNomePesquisa, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jbtnPesquisar))
                    .addComponent(jLabel6))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 25, Short.MAX_VALUE)
                .addComponent(jspTabela, javax.swing.GroupLayout.PREFERRED_SIZE, 299, javax.swing.GroupLayout.PREFERRED_SIZE))
        );
        jtpAlunos.addTab("Pesquisa Alunos", jpPesquisaAlunos);

        jbtnNovo.setIcon(new javax.swing.ImageIcon("C:\\ProjetoIntegrador\\src\\resources\\new.gif"));
        jbtnNovo.setMnemonic('N');
        jbtnNovo.setText("Novo");
        jbtnNovo.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtnNovoActionPerformed(evt);
            }
        });

        jbtnAlterar.setIcon(new javax.swing.ImageIcon("C:\\ProjetoIntegrador\\src\\resources\\paste.gif"));
        jbtnAlterar.setMnemonic('A');
        jbtnAlterar.setText("Alterar");
        jbtnAlterar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtnAlterarActionPerformed(evt);
            }
        });

        jbtnExcluir.setIcon(new javax.swing.ImageIcon("C:\\ProjetoIntegrador\\src\\resources\\trash-icon.gif"));
        jbtnExcluir.setMnemonic('E');
        jbtnExcluir.setText("Excluir");
        jbtnExcluir.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtnExcluirActionPerformed(evt);
            }
        });

        jbtnSalvar.setIcon(new javax.swing.ImageIcon("C:\\ProjetoIntegrador\\src\\resources\\save.gif"));
        jbtnSalvar.setMnemonic('S');
        jbtnSalvar.setText("Salvar");
        jbtnSalvar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtnSalvarActionPerformed(evt);
            }
        });

        jbtnCancelar.setIcon(new javax.swing.ImageIcon("C:\\ProjetoIntegrador\\src\\resources\\delete.gif"));
        jbtnCancelar.setMnemonic('C');
        jbtnCancelar.setText("Cancelar");
        jbtnCancelar.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jbtnCancelarActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addContainerGap(68, Short.MAX_VALUE)
                .addComponent(jbtnNovo)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jbtnAlterar)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jbtnExcluir)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jbtnSalvar)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jbtnCancelar)
                .addGap(39, 39, 39))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jbtnNovo)
                    .addComponent(jbtnAlterar)
                    .addComponent(jbtnExcluir)
                    .addComponent(jbtnSalvar)
                    .addComponent(jbtnCancelar))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        jLabel1.setText("C\u00f3digo:");

        jtfCodigo.setEditable(false);

        jLabel2.setText("Nome:");

        jLabel3.setText("Fone:");

        jLabel4.setText("E-mail:");

        jLabel5.setText("Observa\u00e7\u00e3o:");

        jtaObservacao.setColumns(20);
        jtaObservacao.setRows(5);
        jScrollPane2.setViewportView(jtaObservacao);

        javax.swing.GroupLayout jpCadastroAlunosLayout = new javax.swing.GroupLayout(jpCadastroAlunos);
        jpCadastroAlunos.setLayout(jpCadastroAlunosLayout);
        jpCadastroAlunosLayout.setHorizontalGroup(
            jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addGroup(jpCadastroAlunosLayout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addComponent(jScrollPane2, javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel5, javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, jpCadastroAlunosLayout.createSequentialGroup()
                        .addGroup(jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel1)
                            .addComponent(jLabel2)
                            .addComponent(jLabel3)
                            .addComponent(jLabel4))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addComponent(jtfCodigo, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jtfTelefone, javax.swing.GroupLayout.PREFERRED_SIZE, 115, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jtfEmail)
                            .addComponent(jtfNome, javax.swing.GroupLayout.DEFAULT_SIZE, 428, Short.MAX_VALUE))))
                .addContainerGap(85, Short.MAX_VALUE))
        );
        jpCadastroAlunosLayout.setVerticalGroup(
            jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jpCadastroAlunosLayout.createSequentialGroup()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(17, 17, 17)
                .addGroup(jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jtfCodigo, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(jtfNome, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel3)
                    .addComponent(jtfTelefone, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(jpCadastroAlunosLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel4)
                    .addComponent(jtfEmail, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(15, 15, 15)
                .addComponent(jLabel5)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(82, Short.MAX_VALUE))
        );
        jtpAlunos.addTab("Cadastro de Alunos", jpCadastroAlunos);

        jtAulasAlunos.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {

            },
            new String [] {
                "Nome Aluno", "Turma", "Aula", "Tipo Aula"
            }
        ) {
            Class[] types = new Class [] {
                java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class
            };
            boolean[] canEdit = new boolean [] {
                false, false, false, false
            };

            public Class getColumnClass(int columnIndex) {
                return types [columnIndex];
            }

            public boolean isCellEditable(int rowIndex, int columnIndex) {
                return canEdit [columnIndex];
            }
        });
        jScrollPane1.setViewportView(jtAulasAlunos);

        javax.swing.GroupLayout jpAulasAlunoLayout = new javax.swing.GroupLayout(jpAulasAluno);
        jpAulasAluno.setLayout(jpAulasAlunoLayout);
        jpAulasAlunoLayout.setHorizontalGroup(
            jpAulasAlunoLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 564, Short.MAX_VALUE)
        );
        jpAulasAlunoLayout.setVerticalGroup(
            jpAulasAlunoLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 360, Short.MAX_VALUE)
        );
        jtpAlunos.addTab("Aulas do Aluno", jpAulasAluno);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jbtnSair, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE))
            .addComponent(jtpAlunos, javax.swing.GroupLayout.DEFAULT_SIZE, 569, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jbtnSair)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jtpAlunos, javax.swing.GroupLayout.PREFERRED_SIZE, 385, javax.swing.GroupLayout.PREFERRED_SIZE))
        );
        pack();
    }// </editor-fold>                        
    
    private void jbtnSairActionPerformed(java.awt.event.ActionEvent evt) {                                         
        try {
            con.close();
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        dispose();
    }                                        
       
    private void jbtnPesquisarActionPerformed(java.awt.event.ActionEvent evt) {                                              
        String sql = "select alunos.alcodigo,alunos.alnome,alunos.altelefone,alunos.alemail,alunos.aleobservacao " +
                "from alunos  where alunos.alnome containing 'a'";
        try {
            ResultSet rs = st.executeQuery(sql);
            while( rs.next() ) {
               
            }
        } catch (SQLException ex) {
            ex.printStackTrace();
            JOptionPane.showMessageDialog(this,"Ocorreu um erro ao tentar executar a pesquisa!","Ops",JOptionPane.ERROR_MESSAGE);
        }
    }                                             
    
    private void jbtnCancelarActionPerformed(java.awt.event.ActionEvent evt) {                                             
        acaoCadastro = "";
        desabilitaBotao();
    }                                            
    
    private void jbtnSalvarActionPerformed(java.awt.event.ActionEvent evt) {                                           
        if (acaoCadastro == "NOVO"){
            String sql = "insert into alunos (alunos.alnome,alunos.altelefone,alunos.alemail,alunos.aleobservacao) values (?,?,?,?)";
            try {
                pst = con.prepareStatement(sql);
                pst.setString(1,jtfNome.getText());
                pst.setString(2,jtfTelefone.getText());
                pst.setString(3,jtfEmail.getText());
                pst.setString(4,jtaObservacao.getText());
                pst.executeUpdate();
                acaoCadastro = "";
            } catch (SQLException ex) {
                ex.printStackTrace();
            }
        } else
            if (acaoCadastro == "ALTERAR"){
            String sql = "insert into alunos (alunos.alnome,alunos.altelefone,alunos.alemail,alunos.aleobservacao) values (?,?,?,?)";
            try {
                pst = con.prepareStatement(sql);
                pst.setString(1,jtfNome.getText());
                pst.setString(2,jtfTelefone.getText());
                pst.setString(3,jtfEmail.getText());
                pst.setString(4,jtaObservacao.getText());
                acaoCadastro = "";
            } catch (SQLException ex) {
                ex.printStackTrace();
            }
            
            } else if (acaoCadastro == ""){
            JOptionPane.showMessageDialog(this,"Não há uma operação em andamento","Sem ação",JOptionPane.ERROR_MESSAGE);
            }
        desabilitaBotao();
    }                                          
    
    private void jbtnExcluirActionPerformed(java.awt.event.ActionEvent evt) {                                            
        desabilitaBotao();
    }                                           
    
    private void jbtnAlterarActionPerformed(java.awt.event.ActionEvent evt) {                                            
        habilitaBotao();
    }                                           
    
    private void jbtnNovoActionPerformed(java.awt.event.ActionEvent evt) {                                         
        acaoCadastro = "NOVO";
        habilitaBotao();
    }                                        
    
    // <editor-fold defaultstate="collapsed" desc=" Acoes botoes ">
    public void habilitaBotao(){
        jbtnNovo.setEnabled(false);
        jbtnAlterar.setEnabled(false);
        jbtnExcluir.setEnabled(false);
        jbtnSalvar.setEnabled(true);
        jbtnCancelar.setEnabled(true);
    }
    
    public void desabilitaBotao(){
        jbtnNovo.setEnabled(true);
        jbtnAlterar.setEnabled(true);
        jbtnExcluir.setEnabled(true);
        jbtnSalvar.setEnabled(false);
        jbtnCancelar.setEnabled(false);
    }
    // </editor-fold>
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new FormAluno(new javax.swing.JFrame(), true).setVisible(true);
            }
        });
    }
    
    // <editor-fold defaultstate="collapsed" desc=" Itens GUI e Declaracao de variaveis ">
    // Declaração de variáveis - não modifique                     
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JButton jbtnAlterar;
    private javax.swing.JButton jbtnCancelar;
    private javax.swing.JButton jbtnExcluir;
    private javax.swing.JButton jbtnNovo;
    private javax.swing.JButton jbtnPesquisar;
    private javax.swing.JButton jbtnSair;
    private javax.swing.JButton jbtnSalvar;
    private javax.swing.JPanel jpAulasAluno;
    private javax.swing.JPanel jpCadastroAlunos;
    private javax.swing.JPanel jpPesquisaAlunos;
    private javax.swing.JScrollPane jspTabela;
    private javax.swing.JTable jtAulasAlunos;
    private javax.swing.JTable jtTabelaAlunos;
    private javax.swing.JTextArea jtaObservacao;
    private javax.swing.JTextField jtfCodigo;
    private javax.swing.JTextField jtfEmail;
    private javax.swing.JTextField jtfNome;
    private javax.swing.JTextField jtfNomePesquisa;
    private javax.swing.JTextField jtfTelefone;
    private javax.swing.JTabbedPane jtpAlunos;
    // Fim da declaração de variáveis                   
    // </editor-fold>
    
}
#12

Problema resolvido:

[code]

…
import java.util.Vector;
import javax.swing.JOptionPane;

public class FormAluno extends javax.swing.JDialog {

String url = "";
String acaoCadastro = "";
Statement st;
PreparedStatement pst;
Connection con;

//** Cabecalho tabela */
Vector titulosTabela = new Vector();

//** Valores */
Vector linhaTabela = new Vector();
Vector colunaTabela = new Vector();

private void jbtnPesquisarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jbtnPesquisarActionPerformed
PreparedStatement pstPesquisa;

    // Limpeza de vetores //
    colunaTabela.clear();
    linhaTabela.clear();
    titulosTabela.clear();
    
    // Titulo da Tabela //
    titulosTabela.add("Código");
    titulosTabela.add("Nome");
    titulosTabela.add("Telefone");
    titulosTabela.add("E-mail");
    
    String sql = "select alunos.alcodigo,alunos.alnome,alunos.altelefone,alunos.alemail,alunos.aleobservacao " +
            "from alunos  where alunos.alnome containing ?";
    try {
        pstPesquisa = con.prepareStatement(sql);
        pstPesquisa.setString(1,jtfNomePesquisa.getText());
        ResultSet rs = pstPesquisa.executeQuery();
        while( rs.next() ) {
            colunaTabela = new Vector();
            colunaTabela.add(rs.getInt("alcodigo"));
            colunaTabela.add(rs.getString("alnome"));
            colunaTabela.add(rs.getString("altelefone"));
            colunaTabela.add(rs.getString("alemail"));
            linhaTabela.add(colunaTabela);
        }
        javax.swing.table.DefaultTableModel modeloTabela = new javax.swing.table.DefaultTableModel(linhaTabela,titulosTabela);
        jtTabelaAlunos.setModel(modeloTabela);
        jtTabelaAlunos.setColumnSelectionInterval(0,3);
    } catch (SQLException ex) {
        ex.printStackTrace();
        JOptionPane.showMessageDialog(this,"Ocorreu um erro ao tentar executar a pesquisa!","Ops",JOptionPane.ERROR_MESSAGE);
    }
}[/code]
#13