import javax.swing.JOptionPane;

public class GuessBirthdayUsingConfirmationDialog {
  public static void main(String[] args) {
    String set1 =
      " 1  3  5  7\n" +
      " 9 11 13 15\n" +
      "17 19 21 23\n" +
      "25 27 29 31";

    String set2 =
      " 2  3  6  7\n" +
      "10 11 14 15\n" +
      "18 19 22 23\n" +
      "26 27 30 31";

    String set3 =
      " 4  5  6  7\n" +
      "12 13 14 15\n" +
      "20 21 22 23\n" +
      "28 29 30 31";

    String set4 =
      " 8  9 10 11\n" +
      "12 13 14 15\n" +
      "24 25 26 27\n" +
      "28 29 30 31";

    String set5 =
      "16 17 18 19\n" +
      "20 21 22 23\n" +
      "24 25 26 27\n" +
      "28 29 30 31";

    int day = 0;

    // Prompt the user to answer questions
    int answer = JOptionPane.showConfirmDialog(null,
      "Is your birthday in these numbers?\n" + set1);

    if (answer == JOptionPane.YES_OPTION)
      day += 1;

    answer = JOptionPane.showConfirmDialog(null,
      "Is your birthday in these numbers?\n" + set2);

    if (answer == JOptionPane.YES_OPTION)
      day += 2;

    answer = JOptionPane.showConfirmDialog(null,
      "Is your birthday in these numbers?\n" + set3);

    if (answer == JOptionPane.YES_OPTION)
      day += 4;

    answer = JOptionPane.showConfirmDialog(null,
      "Is your birthday in these numbers?\n" + set4);

    if (answer == JOptionPane.YES_OPTION)
      day += 8;

    answer = JOptionPane.showConfirmDialog(null,
      "Is your birthday in these numbers?\n" + set5);

    if (answer == JOptionPane.YES_OPTION)
      day += 16;

    JOptionPane.showMessageDialog(null, "Your birthday is " +
      day + "!");
  }
}