int day = 0;
        int year = 0;
        int month = 0;

        input = JOptionPane.showInputDialog("What is Client " + (i+1) +  "day of birth?");
        day = Integer.parseInt(input);
        input = JOptionPane.showInputDialog("What is Client " + (i+1) +  "month of birth?");
        month = Integer.parseInt(input);
        input = JOptionPane.showInputDialog("What is Client " + (i+1) +  "year of birth?");
        year = Integer.parseInt(input);

        if (date.calcDate(month, day, year) == false || input.equals(" ")
                 || input.equals(null) || input.equals(""))
        {
           do
           {
              input = JOptionPane.showInputDialog("ERROR! What is Client " + (i+1) +  "day of birth?");
              day = Integer.parseInt(input);
              input = JOptionPane.showInputDialog("ERROR! What is Client " + (i+1) +  "month of birth?");
              month = Integer.parseInt(input);
              input = JOptionPane.showInputDialog("ERROR! What is Client " + (i+1) +  "year of birth?");
              year = Integer.parseInt(input);
           }while(date.calcDate(month, day, year) == false || input.equals(" ")
                    || input.equals(null) || input.equals(""));
        }
        else
        {
           healthApp.setBirthDate(day, month, year);
        }