package org.apidesign.singletons.impl;

 import javax.swing.JOptionPane;

 import org.apidesign.singletons.api.DialogDisplayer;

 import org.openide.util.lookup.ServiceProvider;

 @ServiceProvider(service=DialogDisplayer.class)

 public final class DefaultDialogDisplayer extends DialogDisplayer {

     @Override

     public boolean yesOrNo(String query) {

         final int res = JOptionPane.showConfirmDialog(null, query);

         return res == JOptionPane.OK_OPTION;

     }

 }