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From "Günter Kukies" <>
Subject Re: IndexWriter addDocument NullPointerException
Date Fri, 21 Feb 2003 20:22:21 GMT

I don't have any line number.

this is the code snippet:

Document doc;
IndexWriter writer;


catch(Exception ex){

this is the output on Standard.out:


and nothing more.

The doc is not null and System.out.println(doc) seems to be ok. There is
no difference between the working 80% and the not working 20% doc's.


> On Friday 21 February 2003 05:33, Günter Kukies wrote:
>> Hello,
>> writer.addDocument(doc) is throwing an NullPointerException. The
>> stacktrace from the catched Exception is only one line
>> "NullPointerException" without anything else. I open the IndexWriter
>> with create true. Run over the files in a Directory and add all found
>> documents. After that i close the indexwriter. 80% of the documents
>> were added without problems. The rest gets that NullPointerException.
>> Any Ideas?
> Perhaps look at the line where the null pointer exception is thrown and
> see  what happens? NullPointerException is thrown when a null reference
> is being  de-referenced. Seeing the immediate cause should be easy,
> given line number.
> Perhaps you have added a field with null value? (just a guess, I don't
> know if  that's even illegal).
> -+ Tatu +-
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