question: private URI canonicalize ( String uriString ) throws URISyntaxException { if ( ( uriString == null ) || ( uriString . compareTo ( "localhost" ) == 0 ) ) { uriString = "//localhost" ; return new URI ( uriString ) ; } URI u = new URI ( uriString ) ; if ( u . isAbsolute ( ) ) { if ( u . isOpaque ( ) ) { String scheme = u . getScheme ( ) ; String ssp = u . getSchemeSpecificPart ( ) ; String frag = u . getFragment ( ) ; URI u2 = null ; int c1index = uriString . indexOf ( ":" ) ; int c2index = uriString . lastIndexOf ( ":" ) ; if ( c2index != c1index ) { if ( frag == null ) { u2 = new URI ( scheme + "://" + ssp ) ; } else { u2 = new URI ( scheme + "://" + ssp + "#" + frag ) ; } return u2 ; } u2 = new URI ( "//" + uriString ) ; return u2 ; } else { return u ; } } else { String ssp = u . getSchemeSpecificPart ( ) ; if ( ssp . startsWith ( "//" ) ) { return u ; } else { return new URI ( "//" + uriString ) ; } } }
target:  creates a canonical representation of the uriString. This method performs certain translations depending on the type of URI generated by the string.