question: private boolean extraEntity ( String outputString , int charToMap ) { boolean extra = false ; if ( charToMap < ASCII_MAX ) { switch ( charToMap ) { case '"' : if ( ! outputString . equals ( "&quot;" ) ) extra = true ; break ; case '&' : if ( ! outputString . equals ( "&amp;" ) ) extra = true ; break ; case '<' : if ( ! outputString . equals ( "&lt;" ) ) extra = true ; break ; case '>' : if ( ! outputString . equals ( "&gt;" ) ) extra = true ; break ; default : extra = true ; } } return extra ; }
target:  This method returns true if there are some non-standard mappings to entities other than quot, amp, lt, gt, and its only purpose is for performance.