exception details

Exception in thread "main" java.lang.NullPointerException
	at org.geotools.data.shapefile.ShapefileFeatureSource.getReaderInternal(ShapefileFeatureSource.java:335)
	at org.geotools.data.shapefile.ShapefileFeatureStore.getReaderInternal(ShapefileFeatureStore.java:126)
	at org.geotools.data.store.ContentFeatureSource.getReader(ContentFeatureSource.java:612)
	at org.geotools.data.store.ContentFeatureCollection.features(ContentFeatureCollection.java:164)
	at org.geotools.data.store.ContentFeatureCollection.features(ContentFeatureCollection.java:58)
	at org.geotools.data.DataUtilities.list(DataUtilities.java:1508)
	at org.geotools.tutorial.Quickstart.search(Quickstart.java:76)
	at org.geotools.tutorial.Quickstart.main(Quickstart.java:140)