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Editorial Team
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Asked: 2026-05-29T09:58:57+00:00

i have a html file and i have to load html content into my

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i have a html file and i have to load html content into my activity and i have not even heard of regular expression. could you friends help me do this.

I have the below html file and i need to get the {{book name}} and the rest of the content with regular expressions how to that, please help me thanks in advance

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1 Answer

  1. Editorial Team

    I would use something like that:

    import java.util.StringTokenizer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

class SimpleRegexExample {
    //TODO: Load your html content from file
    protected String html = "<html>\n"
            + "<head>\n"
            + "  <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n"
            + " <meta http-equiv=\"Content-Style-Type\" content=\"text/css\">\n"
            + "  <title></title>\n"
            + "   <meta name=\"Generator\" content=\"Cocoa HTML Writer\">\n"
            + "   <meta name=\"CocoaVersion\" content=\"1038.36\">\n"
            + "    <style type=\"text/css\">\n"
            + "        p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 26.0px Helvetica}\n"
            + "        p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 19.0px Helvetica}\n"
            + "        p.p3 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica; min-height: 14.0px}\n"
            + "        p.p4 {margin: 0.0px 0.0px 0.0px 0.0px; font: 19.0px Helvetica; min-height: 23.0px}\n"
            + "        p.p5 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Helvetica}\n"
            + "    </style>\n"
            + "</head>\n"
            + "\n"
            + "    <body>\n"
            + "      <p class=\"p1\"><b>{{BookName}}</b></p>\n"
            + "      <p class=\"p2\">by {{AuthorName}}</p>\n"
            + "      <p class=\"p3\"><br></p>\n"
            + "      <p class=\"p3\"><br></p>\n"
            + "      <p class=\"p4\"><span class=\"Apple-converted-space\"> </span></p>\n"
            + "      <p class=\"p5\">{{AuthorBio}}</p>\n"
            + "      <p class=\"p3\"><br></p>\n"
            + "      <p class=\"p3\"><br></p>\n"
            + "      <p class=\"p5\">{{Credits}}</p>\n"
            + "      <p class=\"p3\"><br></p>\n"
            + "      <p class=\"p3\"><br></p>\n"
            + "   </body>\n"
            + "</html>\n";

    public SimpleRegexExample() {
        // Split the html text into single lines
        StringTokenizer st = new StringTokenizer(html, "\n");

        // Initialize the regex
        String regex = "\\{\\{(.*?)\\}\\}";
        Pattern p = Pattern.compile(regex);

        // Parses each line
        while (st.hasMoreTokens()) {
            String token = st.nextToken();
            Matcher m = p.matcher(token);

            // Searches for matches
            while (m.find()) {
                if (m.group(1) != null) {
                    // TODO: Set here your replacement
                    html = html.replace("{{" + m.group(1) + "}}", m.group(1));
                }
            }
        }

        // Prints the result
        System.out.println(html);
    }

    public static void main(String[] args) {
        new SimpleRegexExample();
    }
}
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