http://cobertura.sourceforge.net: Cobertura is a free Java tool that calculates the percentage of code accessed by tests. It can be used to identify which parts of your Java program are lacking test coverage. It is based on jcoverage.
  • Steven Christou 
/*
 * Cobertura - http://cobertura.sourceforge.net/
 *
 * Copyright (C) 2009 Amit Nithianandan
 * Copyright (C) 2009 John Lewis
 *
 * Note: This file is dual licensed under the GPL and the Apache
 * Source License.
 *
 * Cobertura is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * Cobertura is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Cobertura; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */
package net.sourceforge.cobertura.webapp;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintStream;

public class FlushCoberturaServlet extends HttpServlet {

	/**
	 *
	 */
	private static final long serialVersionUID = 1L;

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		try {
			String className = "net.sourceforge.cobertura.coveragedata.ProjectData";
			String methodName = "saveGlobalProjectData";
			Class saveClass = Class.forName(className);
			java.lang.reflect.Method saveMethod = saveClass.getDeclaredMethod(
					methodName, new Class[0]);
			saveMethod.invoke(null, new Object[0]);
		} catch (Throwable t) {
			PrintStream ps = new PrintStream(resp.getOutputStream());
			ps
					.println("<HTML><BODY><P>Could not save Cobertura data.  Make sure cobertura.jar is in the web server's lib directory: "
							+ t.getLocalizedMessage());
			ps.print("<P>");
			t.printStackTrace(ps);
			ps.println("</BODY></HTML>");
			resp.flushBuffer();
		}
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		doGet(req, resp);
	}

}