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@jayankandathil
Last active December 18, 2015 12:19
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Sample code snippet showing measurement of actions within a Java servlet and returning the information back to the browser
import java.io.PrintWriter;
import java.text.DecimalFormat;
import javax.servlet.http.HttpServletResponse;
final long lngStart;
final long lngEnd;
final double dblElapsedTime;
// Get timestamp
lngStart = System.currentTimeMillis();
// ...do things that you want to measure
// Get timestamp
lngEnd = System.currentTimeMillis();
dblElapsedTime = ((double)(lngEnd-lngStart))/1000;
// Round off to a single decimal
DecimalFormat df = new DecimalFormat("#.#");
PrintWriter out = response.getWriter();
// Set some standard HTTP Response Headers
response.setContentType("text/html");
response.setCharacterEncoding("UTF-8");
response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
out.println("<p>Took [<font color=blue>" + df.format(dblElapsedTime) + "</font>] seconds </p>");
out.flush();
out.close();
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