private void btnBuscarActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnBuscarActionPerformed
        try {
            buscarCedula(txtCedula.getText());
        } catch (JDOMException ex) {
            Logger.getLogger(LibretaCalificaciones.class.getName()).log(Level.SEVERE, null, ex);
        }
        ModeloBuscar modeloAnterior = (ModeloBuscar) tblBuscar.getModel();
        String decision = txtCedula.getText();
        ModeloBuscar modelo = new ModeloBuscar(decision);
        tblBuscar.setModel(modelo);
    }//GEN-LAST:event_btnBuscarActionPerformed