question: protected void parseURI ( String uriString ) throws URISyntaxException { String s = uriString ; int index = s . indexOf ( FRAGMENT_SEPARATOR ) ; if ( index != - 1 ) { setFragment ( s . substring ( index + 1 ) , false ) ; s = s . substring ( 0 , index ) ; } index = s . indexOf ( SCHEME_SEPARATOR ) ; if ( index != - 1 ) { String scheme = s . substring ( 0 , index ) ; if ( isValidScheme ( scheme ) ) { setScheme ( scheme ) ; s = s . substring ( index + 1 ) ; } } parseSchemeSpecificPart ( s , false ) ; }
target:  Rather than attempting to process the uri string in a linear fashion, this implementation works its way from outside-in