public class ParseHtml {
        public String symbolsReplacement(String htmlDocument) {
            Map<String, String> map = new HashMap<String, String>();
            map.put("&quot;", "\"");
            map.put("&amp;", "&");
            map.put("&lt;", "<");
            map.put("&gt;", ">");
            map.put("&nbsp;", " ");
            map.put("&ndash;", "–");
            map.put("&mdash;", "—");
            map.put("&lsquo;", "‘");
            map.put("&rsquo;", "’");
            map.put("&sbquo;", "‚");
            map.put("&ldquo;", "“");
            map.put("&laquo;", "[");
            map.put("&raquo;", "]");
            map.put("&rdquo;", "”");
            map.put("&bdquo;", "„");
            map.put("&frac14;","1/4");
            map.put("&frac12;","1/2");
            map.put("&frac34;","3/4");
            map.put("&copy;","©");
            map.put("&bull;",".");
            map.put("&#8209;","-");

            for (Map.Entry<String, String> item : map.entrySet()) {
                htmlDocument = htmlDocument.replace(item.getKey(), item.getValue());
            }
            return htmlDocument;
        }

        public String parseHtmlDoc(String htmlDocument) {
            StringBuilder resultedDocument = new StringBuilder();
            Stack<Tags> tag = new Stack<>();
            tag.push(Tags.TEXT_BETWEEN_TAGS);
            char temp;
            for (int i = 0; i < htmlDocument.length(); i++) {
                temp = htmlDocument.charAt(i);
                if (temp == '<' && htmlDocument.charAt(i + 1) == 's' && htmlDocument.charAt(i + 2) == 'c' && htmlDocument.charAt(i + 3) == 'r') {
                    tag.push(Tags.SCRIPT_TAG);
                    continue;
                }
                if (temp == '<' && htmlDocument.charAt(i + 1) == '/' && htmlDocument.charAt(i + 2) == 's' && htmlDocument.charAt(i + 3) == 'c') {
                    tag.pop();
                    i = i + 8;
                    continue;
                }
                if (tag.peek() == Tags.SCRIPT_TAG) {
                    continue;
                }
                if (temp == '<' && htmlDocument.charAt(i + 1) == 's' && htmlDocument.charAt(i + 2) == 't' && htmlDocument.charAt(i + 3) == 'y') {
                    tag.push(Tags.STYLE_TAG);
                    continue;
                }
                if (temp == '<' && htmlDocument.charAt(i + 1) == '/' && htmlDocument.charAt(i + 2) == 's' && htmlDocument.charAt(i + 3) == 't') {
                    tag.pop();
                    i += 7;
                    continue;
                }
                if (tag.peek() == Tags.STYLE_TAG) {
                    continue;
                }
                if (temp == '<' && (tag.peek() != Tags.SCRIPT_TAG || tag.peek() != Tags.STYLE_TAG)) {
                    tag.push(Tags.OTHER_TAG);
                    continue;
                }
                if (temp == '>' && tag.peek() == Tags.OTHER_TAG) {
                    tag.pop();
                    continue;
                }
                if (tag.peek() == Tags.TEXT_BETWEEN_TAGS) {
                    if (temp == ' ' && (resultedDocument.length() == 0 || resultedDocument.charAt(resultedDocument.length() - 1) == ' '))
                        continue;
                    resultedDocument.append(temp);
                }
            }
            return (resultedDocument.toString()).replaceAll("[\\s]{2,}", " ");
        }
    }