java 替换emoji表情为 *

public static String filterEmoji(String source) { 

         if(source != null)

         {

             Pattern emoji = Pattern.compile ("[\ud83c\udc00-\ud83c\udfff]|[\ud83d\udc00-\ud83d\udfff]|[\u2600-\u27ff]",Pattern.UNICODE_CASE | Pattern . CASE_INSENSITIVE ) ;

             Matcher emojiMatcher = emoji.matcher(source);

             if ( emojiMatcher.find())

             {

                 source = emojiMatcher.replaceAll("*");

                 return source ;

             }

         return source;

        }

        return source; 

     }