Fechar JDialog com JOptionPane

public class Excluir extends javax.swing.JDialog {
    
    /** Creates new form Excluir */
    public Excluir(java.awt.Frame parent, boolean modal) {
        super(parent, modal);
        initComponents();
        
    }
    
    /** 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.
     */
    private void initComponents() {
        jOptionPane = new javax.swing.JOptionPane();

        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
        jOptionPane.setIcon(new javax.swing.ImageIcon(getClass().getResource("/metal-Warn.gif")));
        jOptionPane.setMessage("Você tem certeza que deseja excluir!");
        jOptionPane.setOptions(options);
        getContentPane().add(jOptionPane, java.awt.BorderLayout.CENTER);

        pack();
    }
    
    /**
     * @param args the command line arguments
     */
  /*  public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Excluir(new javax.swing.JFrame(), true).setVisible(true);
            }
        });
    }*/

    // Variables declaration - do not modify
    public javax.swing.JOptionPane jOptionPane;
    // End of variables declaration
    Object[] options = {"Sim", "Não"};
    
}