question: public final void openFallbackInputStream ( ) throws DataFallbackException { if ( inputBuf == null ) { if ( LOG . isDebugEnabled ( ) ) LOG . debug ( "openFallbackInputStream() : Opening the reader for the " + dataFile . getName ( ) + "file" ) ; try { setInput ( new BufferedReader ( new FileReader ( dataFile ) ) ) ; } catch ( IOException e ) { throw new DataFallbackException ( e . getMessage ( ) ) ; } } }
target:  It opens a file input stream