Specific elements from a web using jsoup - web-scraping

Question

I want to get the atomic clock from here http://watches.uhrzeit.org/atomic-clock.php and I wrote this program
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import java.io.*;
import java.util.*;
public class da {
/**
* #param args
*/
public static void main(String[] args) {
try{
Document doc=Jsoup.connect("http://watches.uhrzeit.org/atomic-clock.php").get();
Elements spans = doc.select("span[id=anzeige_std]");
System.out.println(spans.text());
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
The problem is why it doesn't print anything(I am noob in this thing and I want to learn).

Answer 1

First, to select an element by its id, use the format element#id. The way you have it is for other attributes.
Second, the clock is on this html:
<div id="timer">
<div id="timeText">
<h2>current time CET</h2>
<div id="anzeige_zeit">22:03:10</div>
<div id="anzeige_datum">Tuesday, 2. August 2016</div>
<div id="anzeige_kw">calendar week 31</div>
</div>
</div>
Which we can target with CSS Selectors like this:
Document doc = Jsoup.connect("http://watches.uhrzeit.org/atomic-clock.php").get();
Element atomicTime = doc.select("div#anzeige_zeit").first();
System.out.println(atomicTime.ownText());
Output
22:08:05