Can't turn off HtmlUnit logging messages

Question

I\'m using HtmlUnit to interact with a web page that interacts with the server via Ajax. Soon after the Ajax code starts, HtmlUnit produces these two log messages:

Answer 1

I am using Htmlunit 2.13, and following code is working to trunoff warnings.

LogFactory.getFactory().setAttribute("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.NoOpLog");
java.util.logging.Logger.getLogger("com.gargoylesoftware.htmlunit").setLevel(Level.OFF);
java.util.logging.Logger.getLogger("org.apache.commons.httpclient").setLevel(Level.OFF);