java正则表达式

String newSql = "COMMENT ON TABLE agency_info IS ‘xxx基本信息‘;"; 
        String tableComment = "COMMENT\\s+ON\\s+TABLE\\s+([a-z]|[A-Z]|_)+\\s+IS\\s+‘([^‘]+)‘" ; 
        Pattern pattern = Pattern.compile(tableComment) ; 
        Matcher matcher = pattern.matcher(newSql) ; 
        while(matcher.find()){
            int count = matcher.groupCount() ; 
            for (int i = 0; i <= count; i++) {
                String ret = matcher.group(i) ; 
                System.out.println(ret);
            }
            
        }