public Reader createReader ( byte [ ] cachedBytes ) throws IOException { if ( cachedBytes != null ) { return new InputStreamReader ( new ByteArrayInputStream ( cachedBytes ) ) ; } if ( inputStream != null ) { return new InputStreamReader ( inputStream , charset ) ; } if ( reader != null ) { return reader ; } return new InputStreamReader ( new FileInputStream ( file ) , charset ) ; }
If cachedBytes are not null returns a Reader created from the cachedBytes . Otherwise returns a Reader from the underlying source .