public static Map<String, String> extractMetatags(String html) {
        Map<String, String> metatagsMap = new HashMap<>();
                
        Matcher m = METATAG_PATTERN.matcher(html);
        while (m.find()) {
            if(m.groupCount()==2) {
                String name = m.group(1);
                String content = m.group(2);
                metatagsMap.put(clear(name), clear(content));
            }
        }
        return metatagsMap;
    }
public static Map < String , String > extractMetatags ( String html ) { Map < String , String > metatagsMap = new HashMap < > ( ) ; Matcher m = METATAG_PATTERN . matcher ( html ) ; while ( m . find ( ) ) { if ( m . groupCount ( ) == 2 ) { String name = m . group ( 1 ) ; String content = m . group ( 2 ) ; metatagsMap . put ( clear ( name ) , clear ( content ) ) ; } } return metatagsMap ; }
Extracts the meta tags from an HTML page and returns them in a map.

@param html
@return