Hi Josh,
Can you paste your sourcecode AND explain what are you trying to do? Ralf From: Josh Am [mailto:josh22...@gmail.com] Sent: Montag, 29. August 2011 12:39 To: java-user@lucene.apache.org Subject: Index Writer() Dear friends Hi!! I used Lucene to index some documents but unfortunetly I am a begginer and there is a bug!! it is here! Exception in thread "main" java.lang.NullPointerException at SimpleFileIndexer.indexDirectory( SimpleFileIndexer.java:78) at SimpleFileIndexer.index( SimpleFileIndexer.java:59) at SimpleFileIndexer.main( SimpleFileIndexer.java:26) what should I do? Thanyou all.