Taking textarea data from a Jtable

Question

I know how to use the DefaultTableModel is not the best way to make the tables, however I have not mastered anything of AbstractTableModel, i have a table that is edited as Jtextarea, but when I type does not come in the table cell variable, I wonder how I get what was typed... the Cellrenderer is doing what I want, now I want him to take everything I type in textarea of jTable, follows the code:

public void preenche_evolucao(){ //Pega do banco de dados

        DefaultTableModel modelo = (DefaultTableModel) table_1.getModel();
    modelo.setNumRows(0);
    table_1.getColumnModel().getColumn(2).setCellRenderer(new CustomRenderer());
    table_1.getColumnModel().getColumn(2).setCellEditor(new CustomEditor());
    table_1.setRowHeight(50);
    try {

        Connection con = Conexao.getConexao();
        Statement stmt = con.createStatement();
        ResultSet RS = stmt.executeQuery("SELECT id, Data, Evolucao FROM tab2_perfil where IdPac='" + id + "'");

        while (RS.next()) {
            String dat = RS.getString("Data");
            String tab = RS.getString("Evolucao");
            String id = RS.getString("id");

            modelo.addRow(new Object[] { id, dat, tab });
        }
    } catch (Exception E) {

    }


public void salvaEv() throws java.lang.NullPointerException{ //Pega o que é escrito na célula para passar ao banco de dados

        int row = table_1.getSelectedRow();
    Object valor = table_1.getValueAt(row, 0).toString();
    Object valor2 = table_1.getValueAt(row, 1).toString();

    try {
        Connection con = Conexao.getConexao();
        Statement stmt = con.createStatement();
        stmt.executeUpdate("Insert into tab2_perfil (idPac, Data, Evolucao) values ('" + id + "', '" + valor
                + "', '" + valor2 + "')");
    } catch (java.lang.NullPointerException e) {
        JOptionPane.showMessageDialog(null, "Finalize a edição da tabela!");
    } catch (Exception e) {

    }

Customeditor:

class CustomEditor implements TableCellEditor {
JTextArea textArea;
JScrollPane scrollPane;
public String text;

public CustomEditor() {
    textArea = new JTextArea();
    scrollPane = new JScrollPane(textArea);
}

public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
    textArea.setText((String) value);
    return scrollPane;
}

public void addCellEditorListener(CellEditorListener l) {
}

public void cancelCellEditing() {
}

public Object getCellEditorValue() {
    return textArea.getText();
}

public boolean isCellEditable(EventObject anEvent) {
    return true;
}

public void removeCellEditorListener(CellEditorListener l) {
}

public boolean shouldSelectCell(EventObject anEvent) {
    return true;
}

public boolean stopCellEditing() {
    return true;
}
}

Custom Renderer:

class CustomRenderer implements TableCellRenderer {
JScrollPane scrollPane;
JTextArea textArea;

public CustomRenderer() {
    textArea = new JTextArea();
    scrollPane = new JScrollPane(textArea);
}

public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
        int row, int column) {
    textArea.setText((String) value);
    return scrollPane;
}
}