private void btnSairActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnSairActionPerformed
        if(JOptionPane.showConfirmDialog(rootPane, "Você tem certeza que deseja "
                + "sair ?","",JOptionPane.OK_CANCEL_OPTION) == 0){
            this.dispose();
        }
    }//GEN-LAST:event_btnSairActionPerformed