java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) Caused by: java.lang.NullPointerException at org.displaytag.test.ClassFinder.findAndStoreTestClasses(TestAll.java:180) at org.displaytag.test.ClassFinder.<init>(TestAll.java:156) at org.displaytag.test.TestAll.suite(TestAll.java:104) ... 7 more