how can i get spesific words from an url in java

How can i get spesific words from an url in java. Like i want to take datas from class which calling like blablabla.
Here is my code.

    URL url = new URL("https://www.doviz.com/");
    URLConnection connect = url.openConnection();
    InputStream is = connect.getInputStream();
    BufferedReader br = new BufferedReader(new InputStreamReader(is));
    String line = null;
    while((line = br.readLine()) != null)
    {
        System.out.println(line);
    }

Take a look at Jsoup , this will allow you to get the content of a web page and NOT the HTML code. Let's say it will play the role of the browser, it will parse the HTML tags into a human readable text.

Once you will get the content of your page in a String, you can count the occurrences of your word using any algorithm of occurrences count.

Simple example to use it:

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
/*   ........  */
String URL = "https://www.doviz.com/";       
Document doc = Jsoup.connect(URL).get();
String text = doc.body().text();
System.out.println(text);

EDIT

If you don't want to use a parser (as you mentioned in the comment that you don't want external libraries), you will get the whole HTML code of the page, that's how you can do it

try {
	URL url = new URL("https://www.doviz.com/");       

	BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
	String str;
	while ((str = in.readLine()) != null) {
		str = in.readLine().toString();
		System.out.println(str);
        /*str will get each time the new line, if you want to store the whole text in str 
           you can use concatenation (str+ = in.readLine().toString())*/
	}
	in.close();
} catch (Exception e) {}