question: public String toSafeString ( ) { String scheme = getScheme ( ) ; String ssp = getSchemeSpecificPart ( ) ; if ( scheme != null ) { if ( scheme . equalsIgnoreCase ( "tel" ) || scheme . equalsIgnoreCase ( "sip" ) || scheme . equalsIgnoreCase ( "sms" ) || scheme . equalsIgnoreCase ( "smsto" ) || scheme . equalsIgnoreCase ( "mailto" ) ) { StringBuilder builder = new StringBuilder ( 64 ) ; builder . append ( scheme ) ; builder . append ( ':' ) ; if ( ssp != null ) { for ( int i = 0 ; i < ssp . length ( ) ; i ++ ) { char c = ssp . charAt ( i ) ; if ( c == '-' || c == '@' || c == '.' ) { builder . append ( c ) ; } else { builder . append ( 'x' ) ; } } } return builder . toString ( ) ; } else if ( scheme . equalsIgnoreCase ( "http" ) || scheme . equalsIgnoreCase ( "https" ) || scheme . equalsIgnoreCase ( "ftp" ) ) { ssp = "//" + ( ( getHost ( ) != null ) ? getHost ( ) : "" ) + ( ( getPort ( ) != - 1 ) ? ( ":" + getPort ( ) ) : "" ) + "/..." ; } } StringBuilder builder = new StringBuilder ( 64 ) ; if ( scheme != null ) { builder . append ( scheme ) ; builder . append ( ':' ) ; } if ( ssp != null ) { builder . append ( ssp ) ; } return builder . toString ( ) ; }
target:  Return a string representation of the URI that is safe to print to logs and other places where PII should be avoided.