JDialog return value to JDialog ????

hello all....

legend. JD1 = JDialog1 JD2 = JDialog2

JD1 open JD2......JD2 has any values, how I return this values to JD1 ???

   // JD1 open JD2
   JD2 jd2 = new JD2(null, true);
   jd2.setVisible(true);

   //now I need that JD2 return a value to JD1

JD2 make a search and save the result in a JLabel ...I need return this result on JLabel to JD1. Please show me a how to or example.

thanks !