The problem is with method visibility: JUnitMemCheckTask.java:1222: setOutfile(java.io.File) is not public in org.apache.tools.ant.taskdefs.optional.junit.FormatterElement; cannot be accessed from outside package [fe.setOutfile(outFile);] JUnitMemCheckTask.java:1318: addFormattersTo(java.util.Vector) is not public in org.apache.tools.ant.taskdefs.optional.junit.JUnitTest; cannot be accessed from outside package [test.addFormattersTo(feVector);] Ant JUnit task classes are not ready for extending at all. Every time I tried to solve the visibility problems I ended up with something similar to the original package clone :-( But I found a brand new solution that works with no cloning! We can extend JUnitResultFormatter which has endTask() method with no problem. I'll attach the solution to JBAS-4211 as soon as possible. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4035940#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...