Getting null pointer exception at jDateChooser when application starts

Question

I am using jDateChooser plugin on netbeans. When application starts it throws nullpointerException but when I choose date it works fine. The one and only one problem is it throws exception at runtime. Following is my code where I am getting exception:

String startDate=new SimpleDateFormat("yyyy-MM-dd").format(filterByStartDateChooser.getDate())

Note: I am using netbeans gui to design form.

Please solve my issue.Thanks

Answer 1

This might happen during initialisation. some function or actionlistener might want to read out the jdatechooser while it has no date set. to avoid this, simply add

jDateChooser.setCalendar(Calendar.getInstance());

after creatign your jDatechooser.

Answer 2

   String startDate = null;
  if(filterByStartDateChooser.getDate()!=null )
         startDate = new SimpleDateFormat("yyyy-MM-dd").format(dateFromDateChooser.getDate());
  if(startDate !=null){
            --------------
            ---------------
  }