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From "Ashok Madhavan" <ashok.madha...@gmail.com>
Subject Re: Problem with nullpointerException.
Date Tue, 24 Jul 2007 18:43:53 GMT
just curious. java.util.List would be a better fit here. any specific reason
why you want an array.

regards
Ashok

On 7/24/07, Chris Lamey <clamey@localmatters.com> wrote:
>
> Hello,
>
> As Ashok said on Sunday, the RowBeheer[] array is never initialized.
> When you try to assign a value into an uninitialized array, you get a
> null pointer exception.
>
> You need something like this after you get the resultList back from the
> selectByExample call:
>
> rowBeheer = new RowBeheer[resultList.size()];
>
> Cheers,
> Chris
>
> On Tue, 2007-07-24 at 18:22 +0200, Jdev wrote:
> > In my stacktrace I get an error on the line:
> >
> > rowBeheer[i] = new RowBeheer();
> >
> > In my logfile I get this as result =
> >
> > Error resultList : Cause : java.lang.NullPointerException
> >
> > I think that I have gone wrong somewhere; this block of code is loaded
> > only in the memory and is not visible for the user. The systems looks
> > up the user of he has permission to access the system. I think I do
> > something wrong with []
> >
> >
> >
> > public RowBeheer[] readBeheerList1(String ondnr) {
> >
> >  RowBeheer[] rowBeheer = null;
> >
> >  try {
> >
> >  dao.BeheerDAO beheerDao = (dao.BeheerDAO)
> >
> >  DaoManagerRequester.getDaoManager().getDao(dao.BeheerDAO.class);
> >
> >  model.BeheerExample beheerExample = new model.BeheerExample();
> >
> >  beheerExample.createCriteria().andReferentienummerLike(likesleutel);
> >
> >  List resultList = beheerDao.selectByExample(beheerExample);
> >
> >  if (resultList.size() > 0) {
> >
> >  for(int i = 0; i < resultList.size(); i++) {
> >
> >  rowBeheer[i] = new RowBeheer(); error in the in stacktrace
> >
> >  model.Beheer beheer = (model.Beheer) resultList.get(i);
> >
> >  rowBeheer[i].setReferentienummer(beheer.getReferentienummer());
> >
> >  rowBeheer[i].setVolgnr(beheer.getVolgnr());
> >
> >  rowBeheer[i].setRowdatumbegin(String.valueOf(beheer.getRowdatumbegin
> ()));
> >
> >  rowBeheer[i].setRowdatumeinde(String.valueOf(beheer.getRowdatumeinde
> ()));
> >
> >  rowBeheer[i].setKantoorcode(beheer.getKantoorcode());
> >
> >  rowBeheer[i].setDossierstatus(beheer.getDossierstatus());
> >
> >  return rowBeheer;
> >
> >  }
> >
> > }
> >
> > } catch (Exception e) {
> >
> >   e.printStackTrace();
> >
> >  }
> >
> >  return null;
> >
> >  }
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> >
> > From: Richard Yee [mailto:ryee@cruzio.com]
> >
> > Sent: zondag 22 juli 2007 21:46
> >
> > To: user-java@ibatis.apache.org
> >
> > Subject: Re: Problem with nullpointerException.
> >
> > What line is it occurring on?
> >
> > Did you initialize the DaoManager with the sqlMapConfig file?
> >
> > This code:
> >
> > dao.BeheerDAO beheerDao = (dao.BeheerDAO)
> >
> > DaoManagerRequester.getDaoManager().getDao(dao.BeheerDAO.class);
> >
> > could be put somewhere else b/c it only has to run once. You could
> > store
> >
> > the DAO in application scope.
> >
> > -Richard
> >
> > Davy wrote:
> >
> > >
> >
> > > Can someone explain me how I get the code mentioned below running?
> >
> > >
> >
> > > The problem is that it concerns a list and I don't know correct how
> > I
> >
> > > get it to work, the code that I developed gives me each time a
> >
> > > nullpointerexception when I run it.
> >
> > >
> >
> > > Can someone give me some information about what I do wrong?
> >
> > >
> >
> > > public RowBeheer[] readBeheerList1(String ondnr) {
> >
> > >
> >
> > > RowBeheer[] rowBeheer = null;
> >
> > >
> >
> > > try {
> >
> > >
> >
> > > dao.BeheerDAO beheerDao = (dao.BeheerDAO)
> >
> > > DaoManagerRequester.getDaoManager().getDao(dao.BeheerDAO.class);
> >
> > >
> >
> > > model.BeheerExample beheerExample = new model.BeheerExample();
> >
> > >
> >
> > > beheerExample.createCriteria().andReferentienummerLike(likesleutel);
> >
> > >
> >
> > > List resultList = beheerDao.selectByExample(beheerExample);
> >
> > >
> >
> > > if (resultList.size() > 0) {
> >
> > >
> >
> > > for(int i = 0; i < resultList.size(); i++) {
> >
> > >
> >
> > > rowBeheer[i] = new RowBeheer();
> >
> > >
> >
> > > model.Beheer beheer = (model.Beheer) resultList.get(i);
> >
> > >
> >
> > > rowBeheer[i].setReferentienummer(beheer.getReferentienummer());
> >
> > >
> >
> > > rowBeheer[i].setVolgnr(beheer.getVolgnr());
> >
> > >
> >
> > >
> > rowBeheer[i].setRowdatumbegin(String.valueOf(beheer.getRowdatumbegin
> ()));
> >
> > >
> >
> > >
> > rowBeheer[i].setRowdatumeinde(String.valueOf(beheer.getRowdatumeinde
> ()));
> >
> > >
> >
> > > rowBeheer[i].setKantoorcode(beheer.getKantoorcode());
> >
> > >
> >
> > > rowBeheer[i].setDossierstatus(beheer.getDossierstatus());
> >
> > >
> >
> > > return rowBeheer;
> >
> > >
> >
> > > }
> >
> > >
> >
> > > }
> >
> > >
> >
> > > } catch (Exception e) {
> >
> > >
> >
> > > e.printStackTrace();
> >
> > >
> >
> > > }
> >
> > >
> >
> > > return null;
> >
> > >
> >
> > > }
> >
> > >
> >
>

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