JSOUP

Main.java

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

public class Main {

    public static final String INPUT = "<Snapshot id=\"142102345\">" +
            "<Stats name=\"runtime\" statType=\"moduleRuntime\" il=\"-2\">" +
            "<CS id=\"2\" sT=\"1422004481541\" lST=\"1427376591432\" ct=\"225331\"></CS>" +
            "<CS id=\"3\" sT=\"1422004481541\" lST=\"1427376591432\" ct=\"503459\"></CS>" +
            "<CS id=\"5\" sT=\"1422004481541\" lST=\"1427376591432\" ct=\"0\"></CS>" +
            "</Stats>" +
            "</Snapshot>";

    public static void main(String[] args) {
        Document doc = Jsoup.parse(INPUT);
        final Elements elements = doc.select("CS"); // CSS selector
        for(Element e : elements) {
            System.out.println(e.attr("id") + ":" + e.attr("ct"));
        }
    }
}